HR: 0800h
AN: OS41A-0457    [Abstracts]
TI: Hydrographic Properties in the Bering and Chukchi Seas in the 1999 Summer and Their Comparisons with Climatology
AU: Kang, J
EM: kangjc@sh163.net
AF: Polar Research Institute of China, 451 Jinqiao Road, Pudong, Shanghai 200129, China, Shanghai, 200129 China
AU: * Zhang, X
EM: xdz@iarc.uaf.edu
AF: International Arctic Research Center, University of Alaska Fairbanks, 930 Koyukuk Dr., P.O. Box 757335, Fairbanks,AK99775, Fairbanks, AK99775 United States
AB: Hydrographic Properties in the Bering and Chukchi Seas in the 1999 Summer and Their Comparisons with Climatology Jiancheng Kang 1) and Xiangdong Zhang2) 1) Polar Research Institute of China, Shanghai 200129, China 2) International Arctic Research Center, University of Alaska Fairbanks, AK99775, USA Correspondence should be addressed to Jiancheng KANG (email: kangjc@sh163.net, kangjc@126.com ) Abstract It has been detected that the high latitude climate system, including ocean, sea-ice and atmosphere, is undergoing remarkable changes. However, hydrographic data in this region is very limited. In July and August 1999, the Chinese Ice-breaker "Xuelong" took a cruise to the Bering and Chukchi Seas, which supplies us an opportunity to examine hydrographic status in the 1999 summer and possible changes of the ocean relative to climatology in this region. Measurements of hydrographic properties, including temperature and salinity, were acquired by the CDT, XCDT and XBT systems. Chemical tracers, such as silicate, phosphate and nitrate, are also obtained simultaneously during the cruise. We made objective analyses of these datasets through quality control and interpolations. The analyzed data shows distinct thermohaline structures between the Bering Sea and the Chukchi Sea and the T-S diagram presents properties of different water masses in these two seas. A notable interesting finding by the comparison of the 1999 cruise data with the climatology is that the temperature in the upper 50m in the Bering Sea decreased and the salinity in the same layers in the Chukchi Sea increased. To verify robustness and explore mechanisms of such hydrographic changes, we planned a continuing collection and analysis of observation data in this region. Keywords: Ocean Hydrographic Climatology, Bering Sea, Chukchi Sea
DE: 4207 Arctic and Antarctic oceanography
DE: 4215 Climate and interannual variability (3309)
DE: 4536 Hydrography
DE: 1050 Marine geochemistry (4835, 4850)
DE: 1635 Oceans (4203)
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting