d878bd88-d228-4dc6-b298-43e223b338dd eng utf8 dataset pointOfContact National Centre for Polar and Ocean Research (NCPOR) +91-832-2525515 voice Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND vssamy@ncpor.res.in Mr. Sakthivel Samy V 2020-12-09T00:00:00 creation ISO 19115-1 Geographic information - Metadata - Part 1: Fundamentals ISO 19115-1:2014 Some Physical Characteristics of the Antarctic and Western Indian Oceans 2020-08-17T00:00:00 creation Document digital Expendable bathythermograph (XBT) and hydro graphic observations made along the transects through Antarctic and western Indian Oceans on board M. V. Polar Circle during the First Indian Antarctic Expedition have been analysed and presentedin this paper. A wide north-south variation in the physical oceanographic parameters has been noticed along the transects. Maximum sea surface temperatures have been observed between latitudes 6-10OS and a sharp fall of temperature has been found near the convergence zones particularly between latitudes 40-50?S. The surface temperatures ranged between 28.7OC and -1.7OC. The depths of the isothermal (mixed) layer in the Antarctic waters to the south of latitude 68?S extend to as deep as 200-400 m while at other regions, they are found to be within 100 m. The data clearly shows that a convergence process is taking place around 60OS with the Antarctic surface water slipping below and mixing with the sub antarctic surface water. The exploration of t h e Antarctic Ocean (Southern Ocean) receives much attention by oceanogra-phers of various disciplines, because the ocean supports all the animal life and has a tremendous influenceon meteorology and geophysical problems. During the First Indian Antarctic Expedition (Dec. 1981 -Feb. 1982), a preliminary study of various aspects of Antarctic Ocean waters have been undertaken. Onboard M.V. Polar Circle, expendable bathythermograph (XBT) and hydrographic observations have been made in the area of interest (Fig. 1). The cruise track covered a very long stretch from Mormugaoport on Indias west coast to the continent of Antarctica-. The expendable bathythermograph records inthe depth range (0-760 m) have been obtained at 154 stations along the cruise track using the system developed by Sippican, USA. Seventeen hydrographic stations have been covered between latitudes70-30?S and the water samples collected from standard depths. completed principalInvestigator National Centre for Polar and Ocean Research (NCPOR) 8322525515 voice Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND vssamy@ncaor.gov.in Dr. D V Rama Raju oceans 20.0 140.0 -90.0 30.0 1981-01-01 1982-12-31 Earth Science-Oceans Theme Dakshin Gangotri Antarctic Place Some Physical Characteristics of the Antarctic and Western Indian Oceans Project eng TableDigital Oceans unknown Oceans distributor National Centre for Polar and Ocean Research (NCPOR) +91-832-2525515 voice Headland Sada, Vasco da Gama, Goa 403804 Vasco-da-Gama Goa 403804 IND vssamy@ncpor.res.in Mr. Sakthivel Samy V http://npdc.ncaor.gov.in/npdc/search_mf_data.action?search=freeText&expedition_type=all&parameter=MF1977657583&userType=user&freeTextValue=Some+Physical+Characteristics+of+the+Antarctic+and+Western+Indian+Oceans