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- Title
The Kuroshio Extension Front from satellite sea surface temperature measurements.
- Authors
Chen, Shuiming
- Abstract
The position and strength of the surface Kuroshio Extension Front (KEF), defined as the sea surface temperature (SST) gradient maximum adjacent to the Kuroshio Extension (KE) axis (approximated by a specific SSH contour consistently located at, or near, the maximum of the SSH gradient magnitude), have been studied using weekly, microwave SST measurements from the later 1997 to early 2008. The mean KEF meanders twice around ∼36°N between the east coast of Japan and 153°E. It then migrates southeast to ∼34°N, just before reaching the Shatsky Rise (∼158°E), then progresses mostly eastward. Spatially, the KEF is strongest near the Japan coast, while it is seasonally strongest in winter and weakest in summer. Low-frequency variations of its strength, most notably in its upstream region, can be related to the known bimodal states of the KE. During 2003–2005, when the KE was in its stable state, the winter KEF SST gradient exceeded 10°C/100 km.
- Subjects
SEA of Japan; KUROSHIO; OYASHIO Current; OCEAN temperature; OCEANOGRAPHIC research; OCEAN currents
- Publication
Journal of Oceanography, 2008, Vol 64, Issue 6, p891
- ISSN
0916-8370
- Publication type
Article
- DOI
10.1007/s10872-008-0073-6