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Fuzzy cluster analysis of water mass in the western Taiwan Strait in spring 2019 Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-18 Zhiyuan Hu, Jia Zhu, Longqi Yang, Zhenyu Sun, Xin Guo, Zhaozhang Chen, Linfeng Huang
The classification of the springtime water mass has an important influence on the hydrography, regional climate change and fishery in the Taiwan Strait. Based on 58 stations of CTD profiling data collected in the western and southwestern Taiwan Strait during the spring cruise of 2019, we analyze the spatial distributions of temperature (T) and salinity (S) in the investigation area. Then by using the
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Gravity anomalies determined from mean sea surface model data over the Gulf of Mexico Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-18 Xuyang Wei, Xin Liu, Zhen Li, Xiaotao Chang, Hongxin Luo, Chengcheng Zhu, Jinyun Guo
With the improvements in the density and quality of satellite altimetry data, a high-precision and high-resolution mean sea surface model containing abundant information regarding a marine gravity field can be calculated from long-time series multi-satellite altimeter data. Therefore, in this study, a method was proposed for determining marine gravity anomalies from a mean sea surface model. Taking
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Exploring spatial non-stationarity of near-miss ship collisions from AIS data under the influence of sea fog using geographically weighted regression: A case study in the Bohai Sea, China Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-12 Yongtian Shen, Zhe Zeng, Dan Liu, Pei Du
Sea fog is a disastrous weather phenomenon, posing a risk to the safety of maritime transportation. Dense sea fogs reduce visibility at sea and have frequently caused ship collisions. This study used a geographically weighted regression (GWR) model to explore the spatial non-stationarity of near-miss collision risk, as detected by a vessel conflict ranking operator (VCRO) model from automatic identification
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Modeling wave attenuation by vegetation with accompanying currents in SWAN Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-12 Hong Wang, Zhan Hu
Coastal wetlands such as salt marshes and mangroves provide important protection against stormy waves. Accurate assessments of wetlands’ capacity in wave attenuation are required to safely utilize their protection services. Recent studies have shown that tidal currents have a significant impact on wetlands’ wave attenuation capacity, but such impact has been rarely considered in numerical models, which
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A typhoon-induced storm surge numerical model with GPU acceleration based on an unstructured spherical centroidal Voronoi tessellation grid Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-12 Yuanyong Gao, Fujiang Yu, Cifu Fu, Jianxi Dong, Qiuxing Liu
Storm surge is often the marine disaster that poses the greatest threat to life and property in coastal areas. Accurate and timely issuance of storm surge warnings to take appropriate countermeasures is an important means to reduce storm surge-related losses. Storm surge numerical models are important for storm surge forecasting. To further improve the performance of the storm surge forecast models
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A multi-module with a two-way feedback method for Ulva drift-diffusion Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-12 Hui Sheng, Jianmeng Li, Qimao Wang, Bin Zou, Lijian Shi, Mingming Xu, Shanwei Liu, Jianhua Wan, Zhe Zeng, Yanlong Chen
The outbreak of Ulva in the Yellow Sea has seriously affected marine ecology and economic activities. Therefore, effective prediction of the distribution of Ulva is of great significance for disaster prevention and reduction. However, the prediction method of Ulva is mainly based on numerical simulation. There are two problems with these methods. First is that the initial distribution of Ulva is simulated
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An improved algorithm for retrieving thin sea ice thickness in the Arctic Ocean from SMOS and SMAP L-band radiometer data Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-12 Lian He, Senwen Huang, Fengming Hui, Xiao Cheng
The aim of this study was to develop an improved thin sea ice thickness (SIT) retrieval algorithm in the Arctic Ocean from the Soil Moisture Ocean Salinity and Soil Moisture Active Passive L-band radiometer data. This SIT retrieval algorithm was trained using the simulated SIT from the cumulative freezing degree days model during the freeze-up period over five carefully selected regions in the Beaufort
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A case study of continental shelf waves in the northwestern South China Sea induced by winter storms in 2021 Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-12 Junyi Li, Chen Zhou, Min Li, Quanan Zheng, Mingming Li, Lingling Xie
This study aims to investigate characteristics of continental shelf wave (CSW) on the northwestern continental shelf of the South China Sea (SCS) induced by winter storms in 2021. Mooring and cruise observations, tidal gauge data at stations Hong Kong, Zhapo and Qinglan and sea surface wind data from January 1 to February 28, 2021 are used to examine the relationship between along-shelf wind and sea
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Study on the interannual variability of the Kerama Gap transport and its relation to the Kuroshio/Ryukyu Current system Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-12 Han Zhou, Kai Yu, Jianhuang Qin, Xuhua Cheng, Meixiang Chen, Changming Dong
An analysis of a 68-year monthly hindcast output from an eddy-resolving ocean general circulation model reveals the relationship between the interannual variability of the Kerama Gap transport (KGT) and the Kuroshio/Ryukyu Current system. The study found a significant difference in the interannual variability of the upstream and downstream transports of the East China Sea- (ECS-) Kuroshio and the Ryukyu
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Retrieval of snow depth on Antarctic sea ice from the FY-3D MWRI data Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-06
Abstract The snow depth on sea ice is an extremely critical part of the cryosphere. Monitoring and understanding changes of snow depth on Antarctic sea ice is beneficial for research on sea ice and global climate change. The Microwave Radiation Imager (MWRI) sensor aboard the Chinese FengYun-3D (FY-3D) satellite has great potential for obtaining information of the spatial and temporal distribution
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Morphotype dependence of Globigerinoides ruber (white) and Trilobatus sacculifer Mg/Ca ratios in the western tropical Pacific: implications for reconstructing the mixed-layer depth Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-06 Qi Jia, Tiegang Li, Zhifang Xiong, Bingbin Qin
Planktonic foraminifer Globigerinoides ruber (white) and Trilobatus sacculifer are the most frequently used mixed-layer dwelling species for reconstructing past oceanic environments. Specifically, the Mg/Ca ratios of these two foraminiferal species have been used for reconstructing tropical/subtropical changes in sea surface temperature (SST). However, these two species have different morphotypes,
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Study of screening, transport pathway, and vasodilation mechanisms on angiotensin-I converting enzyme inhibitory peptide from Ulva prolifera proteins Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-06 Zhiyong Li, Yuan He, Hongyan He, Caiwei Fu, Mengru Li, Aiming Lu, Dongren Zhang, Tuanjie Che, Songdong Shen
In this study, Ulva prolifera protein was used for preparing angiotensin-I converting enzyme (ACE)-inhibitory peptide via virtual gastrointestinal digestion and in silico screening. Some parameters of the obtained peptide, such as inhibition kinetics, docking mechanism, stability, transport pathway, were explored by Lineweaver-Burk plots, molecular docking, in vitro stimulate gastrointestinal (GI)
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Benthic bacterial communities indicate anthropogenic activity footprints in coastal area under long-term marine spatial planning practice Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-06 Yi Sun, Hongjun Li, Daixi Liu, Xiaocheng Wang, Quanming Wang, Xiaoyu Cui, Jingfeng Fan
Marine spatial planning (MSP) is designed to divide the sea area into different types of functional zones, to implement corresponding development activities. However, the long-term impacts of anthropogenic activities associated with MSP practice on the marine microbial biosphere are still unclear. Yalu River Estuary, a coastal region in northeast of China, has been divided into fishery & agricultural
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Chemical diversity of scleractinian corals revealed by untargeted metabolomics and molecular networking Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-06 Jiying Pei, Yuxia Zhou, Shiguo Chen, Kefu Yu, Zhenjun Qin, Ruijie Zhang, Yitong Wang
The chemical diversity of scleractinian corals is closely related to their physiological, ecological, and evolutionary status, and can be influenced by both genetic background and environmental variables. To investigate intraspecific variation in the metabolites of these corals, the metabolomes of four species (Pocillopora meandrina, Seriatopora hystrix, Acropora formosa, and Fungia fungites) from
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Comparative mitochondrial genome analysis of Cynoglossidae (Teleost: Pleuronectiformes) and phylogenetic implications Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-06 Bilin Hu, Tingqi Jiang, Liming Wei, Nannan Zhang, Kaixin Wang, Liqin Liu, Bingjian Liu, Jing Liu, Zhenming Lü, Li Gong
Generally, a teleostean group (e.g., family or genus) owns one type or a set of similar mitochondrial gene arrangement. It is interesting, however, that four different types of gene arrangement have been found in the mitochondrial genome (mitogenome) of Cynoglossidae species. So far, the possible mechanisms of mitogenomic gene rearrangement and its potential implications have aroused widespread attention
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The effect of Typhoon Kalmaegi on the modal energy and period of internal waves near the Dongsha Islands (South China Sea) Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-05 Rongwei Zhai, Guiying Chen, Chenjing Shang, Xiaodong Shang, Youren Zheng
The influence of Typhoon Kalmaegi on internal waves near the Dongsha Islands in the northeastern South China Sea was investigated using mooring observation data. We observed, for the first time, that the phenomenon of regular variation characteristics of the 14-d spring-neap cycle of diurnal internal tides (ITs) can be regulated by typhoons. The diurnal ITs lost the regular variation characteristics
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Application and evaluation of layering shear method in LADCP data processing Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-04 Zijian Cui, Chujin Liang, Binbin Guo, Feilong Lin, Yong Mu
The current velocity observation of LADCP (Lowered Acoustic Doppler Current Profiler) has the advantages of a large vertical range of observation and high operability compared with traditional current measurement methods, and is being widely used in the field of ocean observation. Shear and inverse methods are now commonly used by the international marine community to process LADCP data and calculate
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Satellite-observed significant improvement in nearshore transparency of the Bohai Sea during pollution control Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-03-02
Abstract The Bohai Sea (BS) is the unique semi-closed inland sea of China, characterized by degraded water quality due to significant terrestrial pollution input. In order to improve its water quality, a dedicated action named “Uphill Battles for Integrated Bohai Sea Management” (UBIBSM, 2018–2020) was implemented by the Chinese government. To evaluate the action effectiveness toward water quality
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Differences in spring precipitation over southern China associated with multiyear La Niña events Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-02-29 Guangliang Li, Licheng Feng, Wei Zhuang, Fei Liu, Ronghua Zhang, Cuijuan Sui
Composite analyses were performed in this study to reveal the difference in spring precipitation over southern China during multiyear La Niña events during 1901 to 2015. It was found that there is significantly below-normal precipitation during the first boreal spring, but above-normal precipitation during the second year. The difference in spring precipitation over southern China is correlative to
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Mixed layer warming by the barrier layer in the southeastern Indian Ocean Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-02-28 Kaiyue Wang, Yisen Zhong, Meng Zhou
The southeastern Indian Ocean is characterized by the warm barrier layer (BL) underlying the cool mixed layer water in austral winter. This phenomenon lasts almost half a year and thus provides a unique positive effect on the upper mixed layer heat content through the entrainment processes at the base of the mixed layer, which has not been well evaluated due to the lack of proper method and dataset
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The morphological changes of basal channels based on multi-source remote sensing data at the Pine Island Ice Shelf Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-02-22 Xiangyu Song, Zemin Wang, Jianbin Song, Baojun Zhang, Mingliang Liu
The basal channel is a detailed morphological feature of the ice shelf caused by uneven basal melting. This kind of specifically morphology is widely distributed in polar ice shelves. It is an important research object of sea-ice interaction and plays a vital role in studying the relationship between the ice sheet/ice shelf and global warming. In this paper, high-resolution remote sensing image and
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Prediction of seawater pH by bidirectional gated recurrent neural network with attention under phase space reconstruction: case study of the coastal waters of Beihai, China Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-01-09 Chongxuan Xu, Ying Chen, Xueliang Zhao, Wenyang Song, Xiao Li
Marine life is very sensitive to changes in pH. Even slight changes can cause ecosystems to collapse. Therefore, understanding the future pH of seawater is of great significance for the protection of the marine environment. At present, the monitoring method of seawater pH has been matured. However, how to accurately predict future changes has been lacking effective solutions. Based on this, the model
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The combined effects of North Atlantic Oscillation and Western Pacific teleconnection on winter temperature in Eastern Asia during 1980–2021 Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-01-09 Ziqun Zhang, Hongyan Cui, Baoxu Chen, Hong Cai, Pin Li
As important atmospheric circulation patterns in Northern Hemisphere (NH), the North Atlantic Oscillation (NAO) and the Western Pacific teleconnection (WP) affect the winter climate in Eurasia. In order to explore the combined effects of NAO and WP on East Asian (EA) temperature, the NAO and WP indices are divided into four phases from 1980–2021: the positive NAO and WP phase (NAO+/WP+), the negative
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Forty-year investigation of wave power in energetic region of Persian Gulf in Iranian territorial waters by using short-term and new long-term stability assessment parameters Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-01-09 Fouad Salimi, Cyrus Ershadi, Vahid Chegini
The wave power in high potential area of the northern Persian Gulf (near to Iranian coastal areas) is assessed by taking into account the temporal and spatial distributions of wave power for a period of forty years. For this purpose, assimilated wind data of European Centre for Medium-Range Weather Forecasting Interim Reanalysis (ERA-Interim), and hydrography data of General Bathymetric Chat of the
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Seasonal implications for taxonomic sufficiency to simplify M-AMBI methodology in the coastal area adjacent to a eutrophic estuary Acta Oceanol. Sin. (IF 1.4) Pub Date : 2024-01-09 Chenman Yang, Hongjun Song, Yi Sun, Pengfei Xie, Yuan Liu, Hongjun Li
Taxonomic sufficiency (TS) refers to identifying taxa to a taxonomic level sufficient to detect community changes in stressed environments and may provide a cost-effective approach in routine monitoring programs. However, there is still limited information regarding the seasonal impact of applying TS and its implications for the ecological quality evaluation in the estuarine ecosystem. This study investigated
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Strip segmentation of oceanic internal waves in SAR images based on TransUNet Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-29 Kaituo Qi, Hongsheng Zhang, Jiaojiao Lu, Yinggang Zheng, Zhouhao Zhang
The development of oceanic remote sensing artificial intelligence has made possible to obtain valuable information from amounts of massive data. Oceanic internal waves play a crucial role in oceanic activity. To obtain oceanic internal wave stripes from synthetic aperture radar (SAR) images, a stripe segmentation algorithm is proposed based on the TransUNet framework, which is a combination of U-Net
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Wave hindcast under tropical cyclone conditions in the South China Sea: sensitivity to wind fields Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-28
Abstract Reliable wave information is critical for marine engineering. Numerical wave models are useful tools to obtain wave information with continuous spatiotemporal distributions. However, the accuracy of model results highly depends on the quality of wind forcing. In this study, we utilize observations from five buoys deployed in the northern South China Sea from August to September 2017. Notably
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Significant wave height forecasts integrating ensemble empirical mode decomposition with sequence-to-sequence model Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-28 Lina Wang, Yu Cao, Xilin Deng, Huitao Liu, Changming Dong
As wave height is an important parameter in marine climate measurement, its accurate prediction is crucial in ocean engineering. It also plays an important role in marine disaster early warning and ship design, etc. However, challenges in the large demand for computing resources and the improvement of accuracy are currently encountered. To resolve the above mentioned problems, sequence-to-sequence
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Cross-shelf variation of internal tides west of the Dongsha Plateau in the northern South China Sea Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-28 Wei Yang, Ruixiang Li, Yanqing Feng, Huijie Xue
We examine the cross-shelf variation of internal tides (ITs) west of the Dongsha Plateau in the northern South China Sea based on observations from 4 moorings deployed between August 2017 and September 2018. On the slope, the amplitude of diurnal baroclinic current ellipses are 5 times larger than that of barotropic currents. The baroclinic energy quickly dissipates during cross-shelf propagation,
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Morphometric analysis of the Andaman outer shelf and upper slope—Implications for the recent slope failure events Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Pachoenchoke Jintasaeranee, Anond Snidvongs
The devastating 2004 tsunamis that hit the southwestern coast of Thailand pose a serious threat to people along the coastal zone. A major aim for the tsunami hazard prediction is better prediction of the next tsunamis and their impacts. In this paper, we present the first implications of recent slope failure events of the Andaman outer shelf and upper slope based on a new detailed bathymetric data
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Molecular quantification of copepod Acartia erythraea feeding on different algae preys Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Simin Hu, Tao Li, Hui Huang, Sheng Liu
Quantitative evaluation of the copepod feeding process is critical for understanding the functioning of marine food webs, as this provides a major link between primary producers and higher trophic levels. In this study, a molecular protocol based on quantitative polymerase chain reaction (qPCR) targeting 18S rDNA was developed and used to investigate the feeding and digestion rates of the copepod Acartia
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Geological context and vents morphology in the ultramafic-hosted Tianxiu field, Carlsberg Ridge Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Jin Liang, Chunhui Tao, Xiangxin Wang, Cheng Su, Wei Gao, Yadong Zhou, Weikun Xu, Xiaohe Liu, Zhongjun Ding
The Tianxiu hydrothermal field (TXHF) located on Carlsberg Ridge is one of the few active ultramafic-hosted venting systems known in the Indian Ocean. Despite numerous investigations, there is limited understanding of its sulfide structure morphology, and the factors controlling the formation of TXHF are poorly understood. In this study, we conducted detailed seafloor mapping using visual data obtained
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Multi-proxy reconstructions of hydrological changes from continental shelf sediments in the northern South China Sea during the interval 9 200–6 200 cal a BP Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Chao Huang, Xiaoxu Qu, Lihui Wang, Yuhan Xie, Yongyi Luo, Fajin Chen, Yin Yang
Past hydroclimatic conditions in southern China are poorly constrained owing to the lack of high-resolution marine-sediment records. In this study, we present high-resolution geochemical and grain-size records of marine sediments from the coastal shelf of the northern South China Sea to investigate regional hydrological variations. Results suggest a warm and humid climate during the interval 9 200–7
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Distribution pattern of macrobenthic assemblages along a salinity gradient in the Hangzhou Bay and its adjacent waters Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Runxuan Yan, Xiaobo Wang, Songyao Peng, Qingxi Han
It is widely acknowledged that the distribution of macrobenthos is affected by salinity, but the degree of influence varies in different areas. To explore the distribution pattern of macrobenthic assemblages in the Hangzhou Bay, 12 stations were sampled to collect macrobenthos and the corresponding bottom water. Changes in the general characteristics of macrobenthos along the salinity gradient in the
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Impacts of channel dredging on hydrodynamics and sediment dynamics in the main channels of the Jiaojiang River Estuary in China Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Yanming Yao, Xueqian Chen, Jinxiong Yuan, Li Li, Weibing Guan
Channel dredging in estuaries increases water depth and subsequently impacts sediment dynamics and morphology. The Jiaojiang River Estuary is dredged frequently owing to heavy shipping demands. In this study, the effects of different dredging schemes on siltation were assessed through numerical modeling. The sediment model of the Jiaojiang River Estuary utilized an optimized bottom boundary layer model
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Regeneration and anti-migration of sand waves associated with sand mining in the Taiwan Shoal Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Jingjing Bao, Feng Cai, Chengqiang Wu, Huiquan Lu, Yongling Zheng, Yufeng Li, Li Sun, Chungeng Liu, Yongbao Li
Sand waves in the Taiwan Shoal are characterized by two distinct spatial scales. Giant sand waves have a length of 2 kilometers with height between 5 m and 25 m, whilst small sand waves is less than 100-m long with height less than 5 m between giant sand wave peaks (crests). A series of five high-resolution multi-beam echo-sounding surveys between 2012 and 2020 in the middle of Taiwan Shoal indicated
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Prokaryotic diversity and community composition in the surface sediments of the Changjiang River Estuary in summer Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Changfeng Qu, Xixi Wang, Liping Zhang, Huamao Yuan, Xuegang Li, Ning Li, Fushan Chen, Jinlai Miao
Microorganisms are fundamental for the functioning of marine ecosystems and are involved in the decomposition of organic matter, transformation of nutrients and circulation of biologically-important chemicals. Based on the complexity of the natural geographic characteristics of the Changjiang River Estuary, the geographic distribution of sedimentary microorganisms and the causes of this distribution
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The influence of bioturbation on sandy reservoirs: the delta front sand of the lower Zhujiang Formation, Baiyun Depression, Zhujiang River Mouth Basin Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Zhifeng Xing, Wei Wu, Juncheng Liu, Yongan Qi, Wei Zheng
Ichnofossils are well developed in clastic rock reservoirs in marine and transitional facies, which can considerably change the physical properties of the reservoir. However, this influence is not well understood, raising an important problem in the effective development of petroleum reservoirs. This paper analyzes continental shelf margin delta reservoirs through core observation, cast thin section
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Influence of asymmetric tidal mixing on sediment dynamics in a partially mixed estuary Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Zhongyong Yang, Zhiming Liang, Yufeng Ren, Daobin Ji, Hualong Luan, Changwen Li, Yujie Cui, Andreas Lorke
To investigate the influence of asymmetric tidal mixing (ATM) on sediment dynamics in tidal estuaries, we developed a vertically one-dimensional idealized analytical model, in which the M2 tidal flow, residual flow and suspended sediment concentration (SSC) are described. Model solutions are obtained in terms of tidally-averaged, and tidally-varying components (M2 and M4) of both hydrodynamics and
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Vertical microbial profiling of water column reveals prokaryotic communities and distribution features of Antarctic Peninsula Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-27 Jiang Li, Luying Zhao, Xiaoqian Gu, Chengxuan Li, Qian Zhang, Liping Fu, Ao Zhang
Prokaryotic diversity and community composition in the water column of eight stations (63 samples) around the Antarctic Peninsula of the Southern Ocean were investigated. Through pyrosequencing of the V3–V4 hypervariable regions of the 16S ribosomal RNA gene, we characterized 4 720 089 valid reads representing 48 188 operational taxonomic units (OTUs, 97% similarity). The community was dominated by
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Contributions of annual and semiannual tidal constituents to chart datum in the China seas and adjacent waters Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-02 Yikai Feng, Yanguang Fu, Long Yang, Dongxu Zhou
Global uniform chart datum (CD) surface construction is the basic upon which to realize various vertical datums transformation, and is of great importance for geospatial data expression under the same vertical datum. Generally, the CD level is computed by developing the function between tidal constituents’ harmonic constants and time, i.e., the lowest astronomical tide is taken as the lowest predicted
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Retraction Note: Efficient detection of pathogen virus in sand dabs, Paralichthys olivaceus using loop-mediated isothermal amplification (LAMP) Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-12-05 Jinik Hwang, So Yun Park, Sung-Suk Suh, Mirye Park, Sukchan Lee, Taek-Kyun Lee
The Editor-in-Chief has retracted this article because it contains material that substantially overlaps with the following article [1]. Furthermore, the same picture from the Acta Oceanologica Sinica (Received 11 August 2015) has been included in the journal Asian Pacific Journal of Tropical Medicines (Received 15 Dec 2015). Therefore the Editor-in-Chief has lost confidence in the work presented in
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Erratum to: Cenozoic giant coal-bearing basin belt discovered in China’s sea area Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-11-23 Gongcheng Zhang, Ying Chen, Dongdong Wang, Zengxue Li
The original online version of this article was revised: (1) Article title was changed to “Cenozoic giant coal-bearing basin belt discovered in China’s sea and its adjacent areas”; (2) title of Fig. 2 “Coal seam distribution and coal-forming sedimentary facies in China’s sea. ①: Xuhu Delta” was changed to “Coal seam distribution and coal-forming sedimentary facies in China’s sea and its adjacent areas
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Technical development of operational in-situ marine monitoring and research on its key generic technologies in China Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-11-03 Yunzhou Li, Juncheng Wang
In China, operational in-situ marine monitoring is the primary means of directly obtaining hydrological, meteorological, and oceanographic environmental parameters across sea areas, and it is essential for applications such as forecast of marine environment, prevention and mitigation of disaster, exploitation of marine resources, marine environmental protection, and management of transportation safety
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Dietary nutrient status modulates nutrient regeneration in the marine ciliate Euplotes vannus Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-11-01
Abstract Marine ciliates play important roles not only in linking the microbial loop to the classic pelagic and benthic food chains but also in regenerating nutrients, yet how dietary nutrient imbalance impacts their nutrient regeneration has not been thoroughly addressed. The growth and physiological responses of Euplotes vannus to low dietary nitrogen (LN) and low dietary phosphorus (LP) conditions
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Record of hydrothermal activity in the Yuhuang hydrothermal field and its implications for the Southwest Indian Ridge: evidence from sulfide chronology Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-11-01
Abstract The Yuhuang hydrothermal field (YHF) is located between the Indomed and Gallieni fracture zones near the top of the off-axis slope on the south rift wall of Segment 29 on the ultraslow Southwest Indian Ridge (SWIR). Previous studies have shown that sulfides in the YHF formed during different mineralization episodes and the YHF has the greatest potential for the formation of large-scale seafloor
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Hepatic caecum of amphioxus and origin of vertebrate liver Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-11-01
Abstract Liver is characteristic of all vertebrates. As a critical hub for many physiological processes including metabolism, innate immunity, protein synthesis and detoxification, its evolutionary origin was largely underappreciated in history, and only received due attention in recent decades. It has been suggested by morphological, ultrastructural and immunohistochemical studies that the hepatic
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Sources and degradation of organic matter in the surface sediments of the Chukchi Sea: insights from amino acids Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-11-01
Abstract In the context of global warming and rapid environment change in the Arctic, the supply of organic matter (OM) has increased significantly and a large amount of OM are buried on the Arctic shelf. Studying the fate of OM in Arctic shelf sediments is crucial to understanding the global carbon sink. As a marginal sea of the Arctic Ocean, the Chukchi Sea is one of the most critical areas where
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Effects of main ecological factors on the growth of marine green alga Caulerpa sertularioides using the response surface methodology Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-11-01
Abstract Caulerpa sertularioides is an invasive potential blooming green alga in China but it remains poorly studied. We studied the effects of ecological factors on its growth. Optimum conditions of ecological factors, i.e., irradiance, temperature, and salinity, for the growth of its fragments were determined in the response surface methodology (RSM). The specific growth rates (SGR) of the fragments
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Combined effect of subsurface dam and layered heterogeneity on groundwater flow and salinity distribution in stratified coastal aquifers Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Chao Gao, Jun Kong, Jun Wang, Tong Zhou, Yuncheng Wen
In this paper, for the first time, we investigated the combined effect of subsurface dams and a typical stratified aquifer (two high-permeability layers with a low-permeability layer between them) on groundwater flow and salinity distribution in a tidally influenced coastal unconfined aquifer. Subsurface dams can inhibit the invasion of saltwater, and the low-permeability layer (LPL) and tide action
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Using radium isotopes to quantify submarine groundwater discharge at different scales in the Huanghe River Estuary, China Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Haowei Xu, Disong Yang, Xiaoyi Guo, Maosheng Gao, Guangquan Chen, Diansheng Ji, Shengtao Chen, Huaming Yu, Bochao Xu
As an important land-ocean interaction process, submarine groundwater discharge (SGD) is composed of multiple dynamical processes at different scales and plays an important role in the study of coastal ocean geochemical budgets. However, most of the existing studies focus on the quantification of the total groundwater discharge, few studies are about the differentiation and quantification of groundwater
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Using radium isotopes to evaluate the uncertainty of submarine groundwater discharge in the northeast and entirety of Daya Bay Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Hequan Gu, Feng Zhao, Zhixin Ni, Meigui Wu, Li Zhao, Aicui Dang, Dongmei Li, Minxia Zhang, Qin Hu
Submarine groundwater discharge (SGD), which can be traced using naturally occurring radium isotopes, has been recognized as a significant nutrient source and land-ocean interaction passage for the coastal waters of the Daya Bay, China. However, uncertainties in assessing SGD fluxes must still be discussed in detail. In this study, we attempted to utilize the Monte Carlo method to evaluate the uncertainties
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Distinguishing the main components of submarine groundwater and estimating the corresponding fluxes based on radium tracing method—taking the Maowei Sea for example Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Linwei Li, Jinzhou Du, Xilong Wang, Yanling Lao
Submarine groundwater discharge (SGD) is an important part in the land-sea interactions, which mainly contains three components: submarine fresh groundwater discharge (SFGD), tidal flat recirculated saline groundwater discharge (tidal flat RSGD) and subtidal recirculated saline groundwater discharge (subtidal RSGD). In order to make a more accurate assessment of the impact of SGD on coastal ecological
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Spatial distribution and export of nutrients and metal elements in the subterranean estuary of Daya Bay Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Zhaoxi Liu, Mingchen Ge, Qianqian Wang, Xuejing Wang, Kai Xiao, Gang Li, Hailong Li
Subterranean estuaries (STE) are important seawater-groundwater mixing zones with complex biogeochemical processes, which play a vital role in the migration and transformation of dissolved materials. In this study, we first investigated the spatial distributions of dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorous (DIP), dissolved inorganic silicon (DSi) and metal elements (As, Ba
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The fate of carbon resulting from pore water exchange in a mangrove and Spartina alterniflora ecozone Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Weizhen Jiang, Guizhi Wang, Qing Li, Manab Kumar Dutta, Shilei Jin, Guiyuan Dai, Yi Xu
Mangrove and salt-marsh wetlands are important coastal carbon sinks. In order to quantify carbon export via pore water exchange and to evaluate subsequent fate of the exported carbon, we carried out continuous observations in a mangrove-Spartina alterniflora ecozone in the Zhangjiang River Estuary, China. The carbon fluxes via pore water exchange were estimated using 222Rn and 228Ra as tracers to be
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Seasonal metal fluxes derived by the interaction of surface water and groundwater in an aquaculture estuary Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Xiaoxiong Wang, Jordi Garcia-Orellana, Xiaogang Chen, Jianan Liu, Fenfen Zhang, Jianguo Qu, Zhuoyi Zhu, Jinzhou Du
Submarine groundwater discharge (SGD) plays a major role as a conveyor of metals to coastal waters. However, the seasonal change of metal fluxes derived through SGD is unclear. Here, we evaluated the behaviours and fluxes of trace metals (Mn, Fe, Ba, Pb, U, Cr, Zn, Cu) in an estuary under different seasonal conditions. The behaviours of trace metals revealed that SGD was the source of Mn (3.51 mmol/(m2·d))
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Microbiota of a seepage face at the mouth of a subterranean estuary: diversity, distribution and substrate dependence Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Yueming Wu, Yongjun Wei, Juan Severino Pino Ibánhez, Danqing Sun, Kaiqi Lu, Qianqian Wang, Jian Li, Shan Jiang
Subterranean estuaries, i.e., the mixing zone between terrestrial groundwater and recirculated seawater, host a wide range of microbiota. Here, field campaigns were conducted at the mouth of the subterranean estuary at the Sanggou Bay (Shandong Province, China) over four consecutive seasons at a seepage face (0–20 cm depth). The diversity of benthic microbiome was characterized via 16S rRNA gene sequencing
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Phosphorus speciation, transformation and benthic processes with implications for environmental impacts in the aquaculture area of Rushan Bay Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Yao Feng, Jun Liu, Aijun Zhang, Yibin Wang, Lu Wang, Zongqing Lv, Xiangbin Ran
Phosphorus (P) is an essential nutrient for many organisms in the ocean, which plays a central role in the stability of ecosystems and the evolution of the environment. The distribution, occurrence and source-sink process of P in offshore waters are highly influenced by mariculture activities. P transformation in water-sediment system is the key process in P cycling, however, the mechanism is poorly
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Tracing surface seawater mixing and nutrient transport by 222Rn on the northern coast of Beibu Gulf, China Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Hao Wang, Qiangqiang Zhong, Fule Zhang, Suiyuan Chen, Hongyan Bao, Jing Lin, Dekun Huang, Tao Yu
The transport and diffusion of substances in seawater are limited by the mixing motion of water bodies, while the main forms of mixing in offshore water bodies are advection and eddy diffusion. The eddy diffusion process of water indicates the possible transport direction of dissolved substances. However, the complex environment in the coastal zone makes it difficult to quantitatively assess the water
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In-situ detection equipment for radon-in-water: unattended operation and monthly investigations Acta Oceanol. Sin. (IF 1.4) Pub Date : 2023-10-31 Chunqian Li, Meng Li, Guangquan Chen, Huaming Yu, Chenglun Zhang, Wen Liu, Jinjia Guo, Shibin Zhao, Lijun Song, Xiliang Cui, Ying Chai, Lu Cao, Diansheng Ji, Bochao Xu
Radon is recognized as a powerful tracer of certain geophysical processes in marine and aquatic environments. In the past few decades, the instruments and methods for measuring radon concentration in water have been developed to some extent but still lack underwater in-situ measurements. Here we present an in-situ detection equipment for radon-in-water (pulsed ionization chamber (PIC)-radon) to measure