Quantitative estimation of anthropogenic iron in the Northeast Asian aerosol using rock-magnetic proxies

Title
Quantitative estimation of anthropogenic iron in the Northeast Asian aerosol using rock-magnetic proxies
Author(s)
김원년; 고영탁; 양승진; 신지영
KIOST Author(s)
Kim, Wonnyon(김원년)Ko, Youngtak(고영탁)Yang, Seungjin(양승진)Shin, Ji Young(신지영)
Publication Year
2019-12-11
Abstract
Soluble Fe in atmospheric dust is considered as an important source of micronutrient to the oceans, affecting phytoplankton growth, carbon export and nitrogen fixation. Recent Fe isotope studies suggested that highly soluble Fe was released by combustion processes. However, it is hard to define the quantity of anthropogenic Fe in aerosol using elemental analysis techniques due to Northeast Asian aerosols are contributed from both natural and anthropogenic sources. In the present study, we apply rock-magnetic methods to quantify soluble anthropogenic Fe for the aerosol samples acquired by high-volume PM sampler in Jeju, Korea. Acquisition behaviour of isothermal remanent magnetization identifies that >95% of magnetization is acquired by soft anthropogenic Fe-containing materials. As these materials are behaved like magnetite showing Curie temperature of 530
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/21034
Bibliographic Citation
AGU2019, pp.1, 2019
Publisher
American Geophysical Union
Type
Conference
Language
English
Publisher
American Geophysical Union
Related Researcher
Research Interests

Paleomagnetism,Environmental Science,Geology,고지자기,환경과학,지질학

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