Meridional distribution of Ra-226 in the west Pacific and the Southern Ocean surface waters
National Natural Science Foundation of China [40706033, 40806031]; COMRA [DYXM-115-02-1-12, DY115-01-2-5] During the 13(th) (1996-1997) and the 19(th) (2002-2003) Chinese National Antarctica Research Expeditions, we collected 60 discrete surface seawater samples along the cruise from the Chanjiang R...
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ftxiamenuniv:oai:dspace.xmu.edu.cn:2288/60950 2023-05-15T14:04:18+02:00 Meridional distribution of Ra-226 in the west Pacific and the Southern Ocean surface waters Chen Zhigang Huang Yipu Chen Min Cai Pinghe Xing Na Cai Yihua Chen Jinfang 黄奕普 2011-09 http://dspace.xmu.edu.cn/handle/2288/60950 en_US eng Chinese Journal of Oceanology and Limnology, 2011,29(6):1224-1236 0254-4059 WOS:000299039400009 http://dspace.xmu.edu.cn/handle/2288/60950 http://dx.doi.org/10.1007/s00343-011-0308-z ANTARCTIC POLAR FRONT MEAN RESIDENCE TIME INDIAN-OCEAN RADIUM ISOTOPES THERMOHALINE STRUCTURE MIXING ZONE EAST CHINA PRYDZ BAY GROUNDWATER DISCHARGE TEMPERATURE DATA Article 2011 ftxiamenuniv 2020-07-21T11:32:28Z National Natural Science Foundation of China [40706033, 40806031]; COMRA [DYXM-115-02-1-12, DY115-01-2-5] During the 13(th) (1996-1997) and the 19(th) (2002-2003) Chinese National Antarctica Research Expeditions, we collected 60 discrete surface seawater samples along the cruise from the Chanjiang River (Yangtze) estuary (30 degrees 59'S, 122 degrees 26'E) through Taiwan Strait, the South China Sea, and the Eastern Indian Ocean to Prydz Bay, Antarctica (69 degrees 10'S, 74 degrees 30'E), and analyzed them for the Ra-226 specific activity. The Ra-226 specific activity of the Chanjiang River estuary surface water (3.15 Bq/m(3)) was found to be the highest among all the surface samples because of the desorption of Ra-226 from riverine particles. Between Chanjiang River estuary and 40 degrees S, Ra-226 specific activity was found to be relatively uniform with a mean value of 1.07 Bq/m(3) (n = 19, SD = 0.14), similar to that of the open ocean. From 40 degrees S to 65 degrees S, Ra-226 specific activity increased intensively, then decreased moderately further southwards. Near the Antarctic shore, it increased again, to 2.31 Bq/m(3). This distribution was controlled by a combination of deep water upwelling, Southern Ocean fronts, water mixing and the continental Ra-226 import. In Prydz Bay and the adjacent sea area, the mean Ra-226 activity value was 2.26 Bq/m(3) (n = 31, SD = 0.28), with a relatively higher value outside of the bay and low Ra-226 activity value in the center of the bay. This was consistent with the topography and hydrological setting of the bay. In addition, we extended the study area northward to the Arctic, by combining the published Ra-226 dataset for surface water from the Bering Sea to the Japan Sea. We also discuss the Ra-226 distribution of high latitude oceanic surface water and its mechanisms. Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Bering Sea Prydz Bay Southern Ocean Xiamen University Institutional Repository Arctic Antarctic Southern Ocean The Antarctic Bering Sea Prydz Bay Pacific Indian |
institution |
Open Polar |
collection |
Xiamen University Institutional Repository |
op_collection_id |
ftxiamenuniv |
language |
English |
topic |
ANTARCTIC POLAR FRONT MEAN RESIDENCE TIME INDIAN-OCEAN RADIUM ISOTOPES THERMOHALINE STRUCTURE MIXING ZONE EAST CHINA PRYDZ BAY GROUNDWATER DISCHARGE TEMPERATURE DATA |
spellingShingle |
ANTARCTIC POLAR FRONT MEAN RESIDENCE TIME INDIAN-OCEAN RADIUM ISOTOPES THERMOHALINE STRUCTURE MIXING ZONE EAST CHINA PRYDZ BAY GROUNDWATER DISCHARGE TEMPERATURE DATA Chen Zhigang Huang Yipu Chen Min Cai Pinghe Xing Na Cai Yihua Chen Jinfang 黄奕普 Meridional distribution of Ra-226 in the west Pacific and the Southern Ocean surface waters |
topic_facet |
ANTARCTIC POLAR FRONT MEAN RESIDENCE TIME INDIAN-OCEAN RADIUM ISOTOPES THERMOHALINE STRUCTURE MIXING ZONE EAST CHINA PRYDZ BAY GROUNDWATER DISCHARGE TEMPERATURE DATA |
description |
National Natural Science Foundation of China [40706033, 40806031]; COMRA [DYXM-115-02-1-12, DY115-01-2-5] During the 13(th) (1996-1997) and the 19(th) (2002-2003) Chinese National Antarctica Research Expeditions, we collected 60 discrete surface seawater samples along the cruise from the Chanjiang River (Yangtze) estuary (30 degrees 59'S, 122 degrees 26'E) through Taiwan Strait, the South China Sea, and the Eastern Indian Ocean to Prydz Bay, Antarctica (69 degrees 10'S, 74 degrees 30'E), and analyzed them for the Ra-226 specific activity. The Ra-226 specific activity of the Chanjiang River estuary surface water (3.15 Bq/m(3)) was found to be the highest among all the surface samples because of the desorption of Ra-226 from riverine particles. Between Chanjiang River estuary and 40 degrees S, Ra-226 specific activity was found to be relatively uniform with a mean value of 1.07 Bq/m(3) (n = 19, SD = 0.14), similar to that of the open ocean. From 40 degrees S to 65 degrees S, Ra-226 specific activity increased intensively, then decreased moderately further southwards. Near the Antarctic shore, it increased again, to 2.31 Bq/m(3). This distribution was controlled by a combination of deep water upwelling, Southern Ocean fronts, water mixing and the continental Ra-226 import. In Prydz Bay and the adjacent sea area, the mean Ra-226 activity value was 2.26 Bq/m(3) (n = 31, SD = 0.28), with a relatively higher value outside of the bay and low Ra-226 activity value in the center of the bay. This was consistent with the topography and hydrological setting of the bay. In addition, we extended the study area northward to the Arctic, by combining the published Ra-226 dataset for surface water from the Bering Sea to the Japan Sea. We also discuss the Ra-226 distribution of high latitude oceanic surface water and its mechanisms. |
format |
Article in Journal/Newspaper |
author |
Chen Zhigang Huang Yipu Chen Min Cai Pinghe Xing Na Cai Yihua Chen Jinfang 黄奕普 |
author_facet |
Chen Zhigang Huang Yipu Chen Min Cai Pinghe Xing Na Cai Yihua Chen Jinfang 黄奕普 |
author_sort |
Chen Zhigang |
title |
Meridional distribution of Ra-226 in the west Pacific and the Southern Ocean surface waters |
title_short |
Meridional distribution of Ra-226 in the west Pacific and the Southern Ocean surface waters |
title_full |
Meridional distribution of Ra-226 in the west Pacific and the Southern Ocean surface waters |
title_fullStr |
Meridional distribution of Ra-226 in the west Pacific and the Southern Ocean surface waters |
title_full_unstemmed |
Meridional distribution of Ra-226 in the west Pacific and the Southern Ocean surface waters |
title_sort |
meridional distribution of ra-226 in the west pacific and the southern ocean surface waters |
publishDate |
2011 |
url |
http://dspace.xmu.edu.cn/handle/2288/60950 |
geographic |
Arctic Antarctic Southern Ocean The Antarctic Bering Sea Prydz Bay Pacific Indian |
geographic_facet |
Arctic Antarctic Southern Ocean The Antarctic Bering Sea Prydz Bay Pacific Indian |
genre |
Antarc* Antarctic Antarctica Arctic Bering Sea Prydz Bay Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Arctic Bering Sea Prydz Bay Southern Ocean |
op_source |
http://dx.doi.org/10.1007/s00343-011-0308-z |
op_relation |
Chinese Journal of Oceanology and Limnology, 2011,29(6):1224-1236 0254-4059 WOS:000299039400009 http://dspace.xmu.edu.cn/handle/2288/60950 |
_version_ |
1766275337147121664 |