In this paper, authors report some results obtained from systematic rock magnetic measurements on Core NP95 1 and Core NG93 1 , which were collected from the Prydz Bay, Eastern Antarctica and Great Wall Bay (Maxwell...In this paper, authors report some results obtained from systematic rock magnetic measurements on Core NP95 1 and Core NG93 1 , which were collected from the Prydz Bay, Eastern Antarctica and Great Wall Bay (Maxwell Bay), Western Antarctica respectively during the 11th and 9th CHINARE and a sequence of paleoclimate variations is well established based on sediment rock magnetic properties. In Antarctica, the magnetic properties show a close linkage to paleoenvironmental variations. The Core NP95 1 well recorded several paleoclimatic events, such as Heinrich event 1, Bolling Allerod warm period and Younger Dryas cold event. The Heinrich event 1 occurred at about 14 2 ka B.P., Younger Dryas cold event occurred between 11 7 ka B.P. and 10 3 ka B.P., and the boundary of Pleistocene and Holocene in Antarctica is 10 3 ka B.P.. In Holocene, two warm periods were recorded at about 10 0 ka B.P. and 6 0 ka B.P. with a little cold period between them. After 6 0 ka B.P. , two cores both recorded a cold climatic oscillation. Paleoclimate described by two cores rock magnetic measurements was simultaneously changed in Eastern and Western Antarctica during the same period two cores commonly covered.展开更多
文摘In this paper, authors report some results obtained from systematic rock magnetic measurements on Core NP95 1 and Core NG93 1 , which were collected from the Prydz Bay, Eastern Antarctica and Great Wall Bay (Maxwell Bay), Western Antarctica respectively during the 11th and 9th CHINARE and a sequence of paleoclimate variations is well established based on sediment rock magnetic properties. In Antarctica, the magnetic properties show a close linkage to paleoenvironmental variations. The Core NP95 1 well recorded several paleoclimatic events, such as Heinrich event 1, Bolling Allerod warm period and Younger Dryas cold event. The Heinrich event 1 occurred at about 14 2 ka B.P., Younger Dryas cold event occurred between 11 7 ka B.P. and 10 3 ka B.P., and the boundary of Pleistocene and Holocene in Antarctica is 10 3 ka B.P.. In Holocene, two warm periods were recorded at about 10 0 ka B.P. and 6 0 ka B.P. with a little cold period between them. After 6 0 ka B.P. , two cores both recorded a cold climatic oscillation. Paleoclimate described by two cores rock magnetic measurements was simultaneously changed in Eastern and Western Antarctica during the same period two cores commonly covered.
