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
- Files in This Item:
-
There are no files associated with this item.
Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.