The storm impact on coastal environment is complex and systematic. With a validated numerical model, this study quantitatively investigates the effects of a historical storm process on the morphodynamic evolution of an unsheltered Nanpu channel-shoal system (NS) in the Bohai Sea, China. Results show that the storm event in October 2003 induces a destructive erosion in the tidal flats during the whole

The Bohai Sea is a shallow, semi-closed gulf (basin) at the proximal position of the very wide (one to several thousand kilometers) eastern Chinese margin and was persistently impacted by tectonic frameworks. Its late Quaternary stratigraphy provides an excellent natural laboratory for research on the sedimentary processes and evolutionary patterns on flat proximal continental margins with high sediment

Sequence analysis using borehole samples and high-resolution seismic data in the Nakdong River valley yielded a good example of a river-valley sequence influenced by the complex interplay between the bottom morphology of the steep paleo-valley, varying sediment supply, and Holocene sea-level change associated with coastal currents. The late Quaternary stratigraphic sequence in the Nakdong River Estuary

Preliminary results of the International Ocean Discovery Program (IODP) Expeditions 367/368/368X have confirmed the unique opening mechanism of the South China Sea differentiating from that of the Atlantic Ocean. However, its detailed evolution history and controlling factors spanning from the early Oligocene breakup to the early Miocene steady spreading are still unclear. Here, we conducted sedimentary

Yield stress materials have a wide range of commercial applications. Yet, the suitable way of determining the yield stress values of a given material has been the subject of many studies and debates. Yield stresses are dependent on the material (shear) history and composition, which implies that robust protocols should be developed to study the yield stress dependence on a given parameter. In this

Anthropogenic activities have decreased the sediment transport from catchment to the river-dominated continental margin mainly through river damming that controlled the estuarine and associated shelf modern sedimentation. In this study, radioisotopes 210Pb (210Pbex and 226Ra) and 137Cs, grain size, and X-radiograph were combined to evaluate modern sedimentary processes in the Yangtze River Estuary

Cold water mass (CWM) is a distinct hydrologic phenomenon in summer in worldwide continental shelf seas. CWM can significantly affect circulation patterns and biogeochemical fluxes, and thus marine ecosystems. Nonetheless, limited studies have documented the seasonal migration of the CWM thermal front and the corresponding sediment distribution in the South Yellow Sea (SYS). This study used field observations

The continental slope and rise seaward of the Totten Glacier and the Sabrina Coast, East Antarctica features continental margin depositional systems with high sediment input and consistent along-slope current activity. Understanding their genesis is a necessary step in interpreting the paleoenvironmental records they contain. Geomorphic mapping using a systematic multibeam survey shows variations in

Giant sand waves (heights >10 m) are widely developed on the Taiwan Banks, the distribution pattern, morphotypes and morphometric relationships of which have not yet been fully clarified. Based on multi-beam bathymetric swath data covering 780 line km of survey track, giant sand waves with heights up to 22.5 m and wavelengths up to 2115 m have been recorded. The relationship between height (H) and

The Holocene evolution of the Krishna Delta was inferred using landform characteristics and 11 sediment cores with 59 Accelerator Mass Spectrometry 14C dates. The landform assemblages in a 5880 km2 area of the Krishna Delta indicate an upper (landward) river-built fluvial plain and a lower (seaward) marine-built beach-ridge plain. Holocene sediment unconformably overlying a Pleistocene basement consists

On continental margins, the upper slope to shelf break environment forms a critical region where sediment supply, hydrographic activity and gravitational processes determine how and when sediments are partitioned between the shallow- and deep-marine realm. On the SW Iberian margin, relatively few studies have addressed the dynamics of this region, although it holds key information regarding the link

A numerical model was used to determine whether the landward migration of shore platforms at the low tidal level, due to downwearing and possibly other mechanisms, can match the recession caused by wave erosion at the high tidal level. The hybrid model calculated the time required to undercut a cliff face and to remove the debris, and the amount of recession accomplished at the low tidal level during

Few stratigraphic models of continental shelves incorporate the process of geostrophic current-sweeping, consequently its role in the stratigraphic record is often overlooked. We examine the narrow, current-swept Eastern Cape shelf of South Africa using a combination of geophysical techniques, seafloor sampling and video observations and interpret the role of current action on the transgressive stratigraphy

The understanding of the surrounding river impacts on the sediment supply to the Bohai Sea, northern China, is insufficient. In this study, magnetic measurements on surface sediment from the Bohai Sea and surrounding rivers were performed to interpret the distribution and origin of sediment in the Bohai Sea. Different magnetic properties in the analyzed material correspond to seven provenance areas

The Fenghe River Estuary (FRE), a long-narrow estuary located in the West Coast New Area of Qingdao, China, has suffered severe sediment siltation in the downstream of a tidal barrier over the past decades. In order to relieve the sediment siltation and promote local economic development, a restoration scheme with new shoreline and bathymetry was proposed for the FRE. In this study, a wave-current-sediment

The evolution of the Le Danois contourite depositional systems (CDS) during the Pliocene and Quaternary was investigated based on high-resolution seismic reflection data. From old to young, six seismic units (U1–U6) bounded by major discontinuities (H1–H6) were identified. Regarding variations of the bottom-current circulation, four evolution stages of the Le Danois CDS were identified, including onset

A high degree of uncertainty exists for understanding and predicting coastal estuarine response to changing climate, land-use, and sea-level conditions, leaving geologic records as a best-proxy for constraining potential outcomes. With the majority of the world's population focused in coastal regions, understanding how local systems respond to global, regional, and even local pressures is key in developing

Cold-water coral mounds are abundant seabed structures in the North Atlantic, but not well investigated in the southern oceans. Here, we document for the first time the widespread occurrence of coral mounds at the Northern Argentine margin named Northern Argentine Mound Province (NAMP). The integration of multibeam bathymetry, sediment echosounder, and Acoustic Doppler Current Profiler (ADCP) data

Eroded sediment can return to the subaerial beach through onshore sandbar migration, thus understanding this process is key for rebuilding coastal morphology. While offshore sandbar migrations are fairly predictable based on wave conditions alone, landward migrations are less predictable and more dependent on sandbar morphometrics. In this study, monthly collected topographic and bathymetric data from

A multi-scale dataset consisting of multi-beam echo-sounder, 2D multi-channel seismic and sidescan sonar (TOBI) data allows us to identify a large variety of morphologies originating from sedimentary and tectonic processes along the São Vicente Canyon (SVC), which is the largest submarine canyon developed in the external part of the Gulf of Cadiz. The SVC is located in one of the most seismogenic areas

Although anomalous compaction (dramatic physical property changes) is widely recognised from scientific drilling of sections of marine biosiliceous sediments that have undergone silica diagenesis, the precise mechanisms governing vertically abrupt compaction are poorly understood. To better understand relationships between silica diagenesis and anomalous compaction, the microfabric and composition

Integrating field observations in the high-erosion rate region of the Chinese coastal zone (northern estuary of the Yellow River) were used to investigate the role of wave–seabed interactions in seabed erosion, combined with laboratory erosion experiments on the variations in sediment erodibility due to cyclic wave loading. The field results highlight a strong erosive event that occurred in the presence

Little is known about the geological history of the Glorieuses seamount including basic information about its age and origin related to the regional evolution of the southern tip of the Somali Basin. This study focused on describing and reconstructing the long-term stratigraphic evolution of the Glorieuses seamount (SW Indian Ocean) to identify the mechanisms that have occurred through time to finally

The NW Madagascar continental margin receives high loads of terrigenous particulate organic matter during the wet season and especially linked to extreme events, originating from two major rivers, the Betsiboka and the Mahavavy Rivers. This particulate matter contains a high content of iron minerals from the weathering of red ferruginous/ferralitic soils of Madagascar. The presence of pockmarks, i

Shoreline change in the form of beach rotation can occur at event to decadal timescales, especially in semi-sheltered embayments with bi-directional wave climates, leading to enhanced coastal vulnerability under predictions of increased sea level rise. Previous studies have shown that phases of winter-averaged atmospheric indices in the North Atlantic correlate with variations in average winter wave

The Messinian Salinity Crisis (5.97–5.33 Ma) is one of the most dramatic sea level change events in the global geological record. During this event, marine connection between the Atlantic Ocean and the Mediterranean Sea was restricted, and episodically blocked. While division of the Messinian Salinity Crisis to three major stages is well established and accepted, the scale of sea level change at each

The study of coastal boulder accumulations generated by extreme marine events, and of the energy and frequency involved in boulder transport, is of paramount importance in understanding the risk associated with extreme marine inundations. One of the frequently asked questions is whether the deposits are storm or tsunami-related, both events being characterized by different return periods. Boulder transport

This study establishes a Holocene sedimentation model for the incised valley of the Yangtze Delta based on key information taken from existing literature and new cores collected for this study. Distinctive sedimentary processes and mechanisms operating in the incised valley were revealed: 1) the significant role of a pre-Holocene incised valley on which the Holocene funnel-shaped bay was established

Sea-level fluctuations to a coastal plain setting was crucial for Neolithic human occupations over the Ningshao Coastal Plain, eastern China. In this study, we carry out detailed analyses on dinoflagellate cysts (dinocysts), freshwater algae and foraminiferal organic linings from two sediment cores (HMD1501 and HMD1502) at the Tianluoshan archaeological site, Zhejiang Province, eastern China. Brief

Estuary-shelf interaction is very complex and vital for maintaining healthy ecosystem in the estuaries and adjacent seas. The topic has been intensively studied through cruise observations and numerical models, but less by long-term observations at a fixed station. We present here for the first time roughly 2-months ADCP and CTD continuous data from the Xiaoqushan pilot station of seafloor observatory

Many embayed beaches are formed by barriers that block embayments to create barrier-enclosed estuaries. These embayed beaches are characterized by strong tidal jets that drain the estuaries through a tidal inlet, often debouching at one end. A field study was conducted on Buffalo Beach in Mercury Bay (Waikato, New Zealand) to study wave energy changes caused by the ebb tidal jet. Acoustic Doppler Current

Large sub-tropical carbonate platforms shed huge volumes of sediment onto their adjacent slopes. Resulting carbonate successions are comprised of gravity-flow beds (turbidites, debrites), which are occasionally reworked into mass-transport deposits (MTDs) by the failure of inconsistently lithified portions of slope strata. Despite their significance in the depositional record, the internal architecture

Data from three repeated multi-beam echo-sounder surveys of pre-storm, post-storm, and one year after the storm were used to study the response of sand waves in the Taiwan Shoal to the tropical storm, Talim. The measurements showed significant decreases in wave height of giant sand waves between post-storm and pre-storm, and moderate increases in one year period after the storm. The maximum decrease

Based upon new seismic reflection data, this study reveals the development of a complex sedimentary system on the lower-slope terrace off Maputo on the southern Mozambique margin. The deep-water sedimentary system clearly shows the interaction of downslope and alongslope processes. Downslope features include: a pronounced canyon, slope creep, submarine slides, and multi-stage mass-transport deposits

Downcore geochemical composition of sediment core retrieved from the central Andaman Sea were measured to help understanding the potential connection between chemical weathering and monsoon climate since the last glacial period. The age model was confirmed based on twelve accelerator mass spectrometry (AMS) 14C dates on planktonic foraminifera Neogloboquedrina dutertrei. Provenance discrimination results

During the Anthropocene, regulating river discharge by high dams may have met the need for water demands in river basins, but resulted in carrying less freshwater and sediment to the sea, inducing land degradation and shoreline retreat in worldwide mega-river deltas. In land-ocean interaction, tide response to water discharge changes plays an important role and is crucial for the river-laden sediment

Organic carbon cycling in SE Asia is data-sparse and poorly studied, although high sediment yield and organic carbon intensity occur in the tropical region. In the present study, we evaluated the role of tropical monsoon pertaining to fluvial discharge, sediment load, coastal current and water stratification on seasonal organic carbon dynamics during four sampling campaigns in the Upper Gulf of Thailand

The Xuande Atoll, with a discontinuous reef rim caused by platform drowning, is a typical ellipse isolated platform on the northern slope of the South China Sea. Based on the data of drilling holes, the analysis of surface sediments and high resolution acoustic data, six sedimentary facies are identified in the Xuande Atoll, including reef outer slope, reef front, reef flat, aeolianite sand island

Dune erosion principally occurs when water level exceeds the elevation of the beach and predicting erosion is progressively becoming more important for management as coastal populations increase, sea level rises, and storms become more powerful. This study assesses storm impacts using a simple model from Stockdon et al. (2007) configured with oceanographic information from the ADCIRC + SWAN model and

The analysis of buried tunnel valleys in the North Sea can provide information about the past configuration and dynamics of the Scandinavian and British ice sheets and the processes by which sediment and meltwater were transported at the ice-sheet base. However, little is presently known about the distribution and characteristics of tunnel valleys in the Norwegian sector of the North Sea. Here we use

The Luanhe Fan-Delta (LFD) is one of the most important coastal deltas in North China. Numerous investigations on the late Quaternary evolution of this fan-delta system have been implemented during the 1980s. However, few detailed sedimentologic studies have been undertaken. Based on comprehensive analysis of sedimentary facies, grain size, microfossils, radiocarbon dates (AMS14C) and optically stimulated

Despite availability of a large amount of observational data and modelling studies, the mechanisms maintaining the Turbidity Maximum in the Belgian-Dutch coastal zone around the port of Zeebrugge (Belgium) are insufficiently understood. In order to better understand the dynamics of this turbidity maximum we examine the role of baroclinic (salinity and sediment-induced) processes and local sediment

Human activities, such as the expansion of agricultural and urban land use on subaerial deltas and landfilling of subaqueous deltas have large impacts on Holocene deltas. Here, we quantified the volume of the Holocene deltaic deposits in the Tama River lowland located in the Tokyo Metropolitan Area by analyzing 3872 existing borehole sections using GIS and evaluated artificial land transformation.

This study describes previously unrecognized contourite depositional systems (CDSs) in the Mozambique Channel which constrain palaeoceanographic models for this area. The stratigraphic stacking patterns record nine seismic units (SU1 to SU9) separated by eight major discontinuities (a to h, oldest to youngest). Key seismic markers in CDS evolutionary history occur during Aptian-Albian (~122 Ma), late

In places where ocean currents cause upwelling, nearshore sea-surface temperatures (SST) are often cooler than nearby offshore waters. In the Arraial do Cabo Bay coast upper Holocene aragonitic vermetids are represented by monospecific clusters of overgrowing Petaloconchus varians occurring in supratidal/intertidal carbonate and mixed siliciclastic carbonate deposits. Based on stable isotope composition

Understanding the flux of riverine sediment is crucial not only to document the global terrestrial material budget but also to understand erosion patterns within the drainage basin under the impact of natural and anthropogenic forces. Here we reconstructed changes of sediment discharge in the Yellow River over the last 7000 years based on a large number of 14C dates obtained from literature and discussed

To survive rising sea level, salt marshes must accrete vertically, migrate laterally, or undergo a combination of the two. If sufficient sediment is available for marsh accretion, the slope of the surrounding area is relatively flat, and edge erosion is minimal, then a marsh can theoretically maintain its areal extent through a combination of vertical accretion and upland expansion. However, in cases

Nisyros volcanic island, at the eastern end of the Aegean Volcanic Arc, was mainly constructed after the ultra-Plinian Kos Plateau Tuff (KPT) eruption at 161 ka. The surrounding submarine area consists mostly of marginal mass-transport deposits that commonly characterize insular stratovolcanoes. This study aims at providing insights into the deposition and volume of such deposits by elucidating the

At cold seep environments, the detection of large 34S enrichments within bulk sulphide minerals has been frequently used as a proxy to infer the vertical migrations of the sulphate-methane transition zone (SMTZ). Processes related to the oxidative part of the sulphur cycle can alter the original stable sulphur isotope composition (δ34S) of the solid sulphur phases, in particular at the sediment-water

A total of 7 reference concentration (C0) models (6 existing and 1 newly proposed) were validated against 119 test cases from 4 recently published datasets collected under the LIP, CROSSTEX, SandT-Pro and SINBAD experimental studies. These models were evaluated for performance in different cross-shore regions: the shoaling zone, breaking (outer surf) zone and inner surf zone, under regular and irregular

Beach profile evolution under storm sequence forcing presents an emerging research topic that has only been investigated at a limited number of sites. The occurrence and effects of storm sequencing on beach profile evolution are studied at Hasaki Beach, Japan, using weekly beach profile and two-hourly offshore wave measurements. During the 25-year study period, the supratidal beach at Hasaki is subjected

High-resolution multibeam bathymetric and seismic data enables a detailed morphological investigation of a submarine canyon (West Penghu Canyon) on the northeastern South China Sea margin, where twenty-three (23) scours are observed along the canyon thalweg. These scours form narrow topographic depressions in plan view and show asymmetrical morphologies in cross-section. The identified scours can be