NGHIÊN CỨU XU THẾ BIẾN ĐỘNG TRƯỜNG NHIỆT ĐỘ BỀ MẶT BIỂN  VÀ ẢNH HƯỞNG CỦA ENSO ĐẾN VÙNG BIỂN TÂY NAM VIỆT NAM  SỬ DỤNG DỮ LIỆU VIỄN THÁM VÀ GIS

Tran Anh Tuan; Vu Hai Dang; Pham Viet Hong; Do Ngoc Thuc; Nguyen Thuy Linh; Nguyen Thi Anh Nguyet; Pham Thu Hien; Vu Le Phuong

doi:10.15625/1859-3097/20/2/14173

Author affiliations

Authors

Tran Anh Tuan Institute of Marine Geology and Geophysics, VAST, Vietnam
Vu Hai Dang Institute of Marine Geology and Geophysics, VAST, Vietnam
Pham Viet Hong Institute of Marine Geology and Geophysics, VAST, Vietnam
Do Ngoc Thuc Institute of Marine Geology and Geophysics, VAST, Vietnam
Nguyen Thuy Linh Institute of Marine Geology and Geophysics, VAST, Vietnam
Nguyen Thi Anh Nguyet Institute of Marine Geology and Geophysics, VAST, Vietnam
Pham Thu Hien Institute of Marine Geology and Geophysics, VAST, Vietnam
Vu Le Phuong Institute of Marine Geology and Geophysics, VAST, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/20/2/14173

Keywords:

Trend, sea surface temperature, ENSO, remote sensing, GIS, southwest sea of Vietnam.

Abstract

In this article, the sea surface temperature trends and the influence of ENSO on the southwest sea of Vietnam were analyzed using the continuous satellite-acquired data sequence of SST in the period of 2002–2018. GIS and average statistical methods were applied to calculate the average monthly and seasonal sea surface temperature, the seasonal sea surface temperature anomalies for each year and for the whole study period. Subsequently, the changing trends of sea surface temperature in the northeast and southwest monsoon seasons were estimated using linear regression analysis. Research results indicated that the sea surface temperature changed significantly throughout the calendar year, in which the maximum and minimum sea surface temperature are 31^oC in May and 26^oC in January respectively. Sea surface temperature trends range from 0^oC/year to 0.05^oC/year during the Northeast monsoon season and from 0.025^oC/year to 0.055^oC/year during the southwest monsoon season. Results based on the Oceanic Niño Index (ONI) analysis also show that the sea surface temperature in the study area and adjacent areas is strongly influenced and significantly fluctuates during El Niño and La Niña episodes.

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