HOLOCENE PALEO-SECULAR VARIATION IN KOREA: A POTENTIAL REGIONAL AGE CONSTRAINT TOOL

Title
HOLOCENE PALEO-SECULAR VARIATION IN KOREA: A POTENTIAL REGIONAL AGE CONSTRAINT TOOL
Author(s)
김원년; 형기성
KIOST Author(s)
Kim, Won Nyon(김원년)Hyeong, Ki Seong(형기성)
Alternative Author(s)
김원년; 형기성
Publication Year
2017-12-08
Abstract
The geomagnetic field, like fossils, leaves information of its past direction and intensity on geological media such as rocks and sediments. The fossilized records not only provide information about the electro-magnetic dynamics of the inner Earth, but also serve as a global benchmark for a sediment age constraint. In particular, Holocene geomagnetic fields have been actively studied in North America and Europe and are used as data sets for global prediction models of paleo-secular variation (PSV). However, in Asia, there exists a large inaccuracy between the global PSV models and the actual measurements due to a lack of Asian paleomagnetic data. Here, we report the first successive Holocene PSV in Korea excavated from the sediments core in the mouth of Seomjin River (SJ-4). The sediment ages were determined by carbon isotopes using clam shells that were expected to have little migration. Considered sedimentation rates, regular 2.5 cm or 5 cm paleomagnetic sampling intervals were selected to compensate <50 years age window for the period of ~1 – 10 kyr BP.r Earth, but also serve as a global benchmark for a sediment age constraint. In particular, Holocene geomagnetic fields have been actively studied in North America and Europe and are used as data sets for global prediction models of paleo-secular variation (PSV). However, in Asia, there exists a large inaccuracy between the global PSV models and the actual measurements due to a lack of Asian paleomagnetic data. Here, we report the first successive Holocene PSV in Korea excavated from the sediments core in the mouth of Seomjin River (SJ-4). The sediment ages were determined by carbon isotopes using clam shells that were expected to have little migration. Considered sedimentation rates, regular 2.5 cm or 5 cm paleomagnetic sampling intervals were selected to compensate <50 years age window for the period of ~1 – 10 kyr BP.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23528
Bibliographic Citation
ASQUA 2017, pp.147 - 149, 2017
Publisher
ASQUA 2017
Type
Conference
Language
English
Publisher
ASQUA 2017
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse