Developing near-bottom magnetic measurements using a 3D forward modeling technique: Application to hydrothermal vent fields

Author

Fujii, Masahiro ; Okino, K. ; Honsho, C. ; Dyment, J. ; Florent, S. ; Mochizuki, Noriki

Author_Institution

Atmos. & Ocean Res. Inst., Univ. of Tokyo, Kashiwa, Japan

fYear

2013

fDate

5-8 March 2013

Firstpage

1

Lastpage

4

Abstract

We developed a method for mapping the magnetic structure of absolute magnetization on the seafloor using a three-dimensional forward modeling technique and near-bottom vector magnetic data. We constrained the spatial scale of hydrothermal alteration zones in a back-arc spreading axis of the Southern Mariana Trough. The magnetic signatures of hydrothermal alteration zones are characterized by low magnetization similar to that in mid-ocean ridge vent sites.

Keywords

magnetisation; oceanographic regions; oceanographic techniques; seafloor phenomena; 3D forward modeling technique; absolute magnetization structure; back-arc spreading axis; hydrothermal alteration zones; hydrothermal vent fields; midocean ridge vent sites; near-bottom magnetic measurements; near-bottom vector magnetic data; seafloor mapping; southern Mariana trough; Geology; Magnetic liquids; Magnetization; Magnetoacoustic effects; Magnetometers; Magnetosphere; Vents;

fLanguage

English

Publisher

ieee

Conference_Titel

Underwater Technology Symposium (UT), 2013 IEEE International

Conference_Location

Tokyo

Print_ISBN

978-1-4673-5948-1

Type

conf

DOI

10.1109/UT.2013.6519860

Filename

6519860