AUTHOR=Ouyang Tingping , Li Mingkun , Zhao Xiang , Zhu Zhaoyu , Tian Chengjing , Qiu Yan , Peng Xuechao , Hu Qiao 

TITLE=Sensitivity of Sediment Magnetic Records to Climate Change during Holocene for the Northern South China Sea

JOURNAL=Frontiers in Earth Science

VOLUME=4

YEAR=2016

URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2016.00054

DOI=10.3389/feart.2016.00054

ISSN=2296-6463

ABSTRACT=<p>Magnetic property has been proved to be a sensitive proxy to climate change for both terrestrial and marine sediments. Based on the schedule frame established by AMS <sup>14</sup>C dating of foraminifera, detail magnetic analyses were performed for core PC24 sediments at sampling intervals of 2 cm to discuss magnetic sensitivity of marine sediment to climate during Holocene for the northern South China Sea. The results indicated that: (1) Concentration dependent magnetic parameters are positive corresponding to variation of temperature. The frequency dependent susceptibility coefficient basically reflected the variation in humidity; (2) χ<sub>ARM</sub>/SIRM was more sensitive to detrital magnetite particles and SIRM/χ was more effective to bioge χ<sub>ARM</sub>/SIRM and SIRM/χ are corresponding to precipitation and temperature, respectively; (3) the Holocene Megathermal in the study area was identified as 7.5–3.4 cal. ka BP. The warmest stage of Holocene for the study area should be during 6.1–3.9 cal. ka BP; (4) The 8 ka cold event was characterized as cold and dry during 8.55–8.25 cal. ka BP; (5) During early and middle Holocene, the climate combinations were warm dry and cold wet. It turned to warm and wet after 2.7 cal. ka BP.</p>