Short-Term Variation of the Surface Flow Pattern South of Lombok Strait Observed from the Himawari-8 Sea Surface Temperature

Remote Sensing

Fadli Syamsudin¹  Hidemi Mutsuda²  Naokazu Taniguchi²  Yuji Sakuno²  Shinichiro Kida³ 

[1] Agency for the Assessment and Application of Technology (BPPT), Jakarta 10340, Indonesia;Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan;Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan;

关键词: satellite remote sensing;    sea surface temperature (SST);    sea surface current velocity;    Himawari-8;    maximum cross-correlation (MCC) method;    Lombok Strait;   

DOI  :  10.3390/rs11121491

来源: DOAJ

【 摘 要 】

Spatial and temporal information on oceanic flow is fundamental to oceanography and crucial for marine-related social activities. This study attempts to describe the short-term surface flow variation in the area south of the Lombok Strait in the northern summer using the hourly Himawari-8 sea surface temperature (SST). Although the uncertainty of this temperature is relatively high (about 0.6 ${}^{\circ }$ C), it could be used to discuss the flow variation with high spatial resolution because sufficient SST differences are found between the areas north and south of the strait. The maximum cross-correlation (MCC) method is used to estimate the surface velocity. The Himawari-8 SST clearly shows Flores Sea water intruding into the Indian Ocean with the high-SST water forming a warm thermal plume on a tidal cycle. This thermal plume flows southward at a speed of about 2 $\mathrm{m}/\mathrm{s}$ . The Himawari-8 SST indicates a southward flow from the Lombok Strait to the Indian Ocean, which blocks the South Java Current flowing eastward along the southern coast of Nusa Tenggara. Although the satellite data is limited to the surface, we found it useful for understanding the spatial and temporal variations in the surface flow field.

【 授权许可】

Unknown