tailieunhanh - Ứng dụng tư liệu ảnh vệ tinh và ảnh VNREDSAT-1 trong nghiên cứu môi trường biển khu vực Trường Sa

Bài viết đánh giá một số đặc điểm môi trường bao gồm nhiệt SST, Chlorophyll-a và dòng chảy tầng mặt theo mùa cũng như theo độ sâu với các ảnh đa thời gian có được. | Ứng dụng tư liệu ảnh vệ tinh và ảnh VNREDSAT-1 trong nghiên cứu môi trường biển khu vực Trường Sa Vietnam Journal of Marine Science and Technology Vol. 19 No. 3B 2019 149 162 DOI https 1859-3097 19 3B 14522 https jmst Application of satellite images and VNREDSAT-1 images in study on marine environment in Truong Sa region Do Huy Cuong Bui Thi Bao Anh Nguyen Xuan Tung Nguyen The Luan Le Dinh Nam Pham Duc Hung Nguyen Thi Nhan Tran Xuan Loi Institute of Marine Geology and Geophysics VAST Vietnam E-mail dhcuong@ Received 25 July 2019 Accepted 6 October 2019 2019 Vietnam Academy of Science and Technology VAST Abstract The remote sensing images including images of MODIS VNREDSAT-1 and altimeter are applied for researching marine environment with the different resolutions. On the basis of different time remote sensing images we concentrated on the assessment of several characteristics including the SST chlorophyll-a concentration and sea surface current at the different depths in different monsoons as well. With the large areas we used the images of MODIS and altimeter. The detailed research area focuses on the Nam Yet island and the images of VNREDSAT-1 are used. The analysis method of environmental parameters of SST and chlorophyll-a used the regression functions based on the single and combined bands to enhance the accuracy of the analysis result. The marine parameters collected at different depths in the latest field surveys on Truong Sa archipelago in the years of 2015 and 2018 are presented in this paper. On the basis of these parameters we can analyse the relationships and compare the real field survey data and corresponding results interpreted from remote sensing images. Keywords Remote sensing image marine environment sea surface temperature SST chlorophyll-a concentration sea current. Citation Do Huy Cuong Bui Thi Bao Anh Nguyen Xuan Tung Nguyen The Luan Le Dinh Nam Pham Duc Hung Nguyen Thi Nhan Tran Xuan Loi