ABSTRACT

Identification and characteristics of Internal Waves (IWs) are widely used in a variety of industries, including shipbuilding, maritime, as well as oil and marine engineering. In this study, IWs have been detected using field measurement and satellite remote sensing in the Persian Gulf during the period 2000–2015. In order to identify the potential areas for IWs after vertical changes in the physical parameters such as temperature, salinity, and sigma-T (σT) resulted by field measurements, the areas where high stratifications of seawater were identified. Satellite images corresponding to the identified areas were then prepared and the required modifications were made to the images. IWs were then manifested by such images in different parts of the study area. For the first time, a comprehensive map of the occurrence of IWs has been prepared and presented using Landsat 7 and 8, Sentinel-1 and Sentinel-2 images. Then, spatio-temporal analysis of IWs indicates that the density of them decreases from the Strait of Hormuz in the east of the Persian Gulf to the Khowr-e-Musa estuary in the west. In addition, IWs mainly occur in the warm season, from early March to September and weaken or disappear in the cold season in the Persian Gulf.

摘要

内波（IWs）的识别和特征已广泛应用于各种行业，包括造船，海事以及石油和海洋工程。在这项研究中，在2000年至2015年期间，通过实地测量和卫星遥感在波斯湾发现了IW。为了确定现场测量导致的物理参数（例如温度，盐度和sigma-T（σT））的垂直变化后IW的潜在区域，确定了海水分层较高的区域。然后准备对应于已识别区域的卫星图像，并对图像进行所需的修改。然后，在研究区域的不同部分中通过此类图像来显示IW。首次，已使用Landsat 7和8，Sentinel-1和Sentinel-2图像准备并呈现了IW发生的综合图。然后，对IWs的时空分析表明，它们的密度从波斯湾东部的霍尔木兹海峡到西部的Khowr-e-Musa河口逐渐减小。此外，内战主要发生在三月初至九月的暖季，而在波斯湾的冷季则减弱或消失。