DocumentCode :
2858089
Title :
Observation of the Soya Warm Current Combining HF Ocean Radar with Coastal Tide Gauges and Satellite Altimetry
Author :
Ebuchi, Naoto ; Fukamachi, Yasushi ; Ohshima, Kay I. ; Shirasawa, Kunio ; Wakatsuchi, Masaaki
Author_Institution :
Inst. of Low Temp. Sci., Hokkaido Univ., Sapporo
fYear :
2006
fDate :
July 31 2006-Aug. 4 2006
Firstpage :
1860
Lastpage :
1863
Abstract :
Three HF ocean radar stations were installed at the Soya/La Perouse Strait in the Sea of Okhotsk in order to monitor the Soya Warm Current. The frequency of the HF radar is 13.9 MHz, and the range and azimuth resolutions are 3 km and 5deg, respectively. The radar covers a range of approximately 70 km from the coast. It is shown that the HF radars clearly capture seasonal and short-term variations of the Soya Warm Current. The velocity of the Soya Warm Current reaches its maximum, approximately 1 m s-1, in summer, and weakens in winter. The velocity core is located 20 to 30 km from the coast, and its width is approximately 50 km. The surface transport by the Soya Warm Current shows a significant correlation with the sea level difference along the strait, as derived from coastal tide gauge records. The cross-current sea level difference, which is estimated from the sea level anomalies observed by the Jason-1 altimeter and a coastal tide gauge, also exhibits variation in concert with the surface transport and along-current sea level difference.
Keywords :
altimeters; marine radar; oceanographic regions; oceanographic techniques; remote sensing by radar; sea level; tides; HF ocean radar station; Jason-1 altimeter; La Perouse Strait; Sea of Okhotsk; Soya Warm Current; coastal tide gauges; satellite altimetry; sea level anomalies; sea level difference; surface transport; velocity core; Altimetry; Hafnium; Monitoring; Oceans; Satellites; Sea level; Sea measurements; Sea surface; Spaceborne radar; Tides;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2006. IGARSS 2006. IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-9510-7
Type :
conf
DOI :
10.1109/IGARSS.2006.480
Filename :
4241627
Link To Document :
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