Detection of volcano deformations and coseismic movements using JERS-1 L-band SAR differential interferometry; combination with other geodetic measurements

Author

Kobayashi, Shigeki ; Fujii, Naoyuki ; Okubo, Shuhei

Author_Institution

Nat. Space Dev. Agency of Japan, Tokyo, Japan

Volume

2

fYear

1999

fDate

1999

Firstpage

800

Abstract

We have carried out JERS-1 differential interferometry (DinSAR) research in volcano and earthquake monitoring as `The Earthquake Remote Sensing Frontier Project´ since 1997. The potential of L-band SAR interferometry to detect subtle crustal movements even in mountainous regions in Japan and its geodetic accuracy were evaluated by comparison and combination with other geodetic and seismological observations (e.g. GPS network, leveling survey, precise gravity measurement, strong motion seismology). So far we have succeeded in several cases; (1) lateral fault motion by the Kagoshima earthquake (M=6.3) in 1997, (2) volcano inflation and the following earthquake (M=6.1) around Mt. Iwate in 1998, (3) tensile deformation associated with earthquake swarms around the monogenetic volcano area in the Izu Peninsula in 1997 and 1998

Keywords

Earth crust; earthquakes; faulting; geodesy; geophysical techniques; radiowave interferometry; remote sensing by radar; synthetic aperture radar; volcanology; AD 1997 to 1998; DinSAR; Izu Peninsula; JERS-1 L-band SAR differential interferometry; Japan; Kagoshima earthquake; Mt. Iwate; The Earthquake Remote Sensing Frontier Project; coseismic movements; crustal movements; geodetic accuracy; geodetic measurements; lateral fault motion; monogenetic volcano area; mountainous regions; tensile deformation; volcano deformation; volcano inflation; Earth; Earthquakes; Extraterrestrial measurements; Interferometry; L-band; Orbital calculations; Remote monitoring; Seismology; Synthetic aperture radar; Volcanoes;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International

Conference_Location

Hamburg

Print_ISBN

0-7803-5207-6

Type

conf

DOI

10.1109/IGARSS.1999.774445

Filename

774445