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Page 1: Vol. pp. 2, ,**1 -0+ -02 &’ () * +,-./012304 SAR · Vol. pp. *e-mail: onuma@jgi.co.jp: ALOS, PALSAR, Noto Hanto earthquake, Di erential Interferometry, Surface displacement JGI,

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Bull. Earthq. Res. Inst.

Univ. Tokyo

Vol. pp.

* e-mail : [email protected]

: ALOS, PALSAR, Noto Hanto earthquake, Di erential Interferometry, Surface displacement

JGI, Inc.

Aiming to understand surface deformation patterns associated with the Noto Hanto

earthquake, di erential interferometry was performed using ALOS PALSAR data acquired on

February (before the earthquake) and April, (after the earthquake). Displacement in the line

of sight (LOS) of the radar was mapped through processing steps such as generation of single look

complex (SLC) image data, registration of two SLCs, refinement of baseline, and phase unwrapping

of di erential interferogram. LOS distance after the earthquake was found to decrease in the WNW

direction from the Anamizu Notokashima area, and the maximum reduction of cm around

Akakami Kitawakisaki area was analyzed, as well as the increase of the LOS distance up to cm

in the area of Minazuki through Nishideyama area. Contours of LOS displacement show a pattern

like a concentric circle centered several kilometers away to the NW of the Akakami-Kitawakisaki

area, which is concordant with the location of the epicenter reported by Japan Meteorological

Agency.

SAR

SAR *

SAR

SAR

Ozawa, ;

Tobita, ; Nishimura, ; Tobita,

; Yarai, ; Ozawa,

PALSAR PAL-

L SAR SAR . *

ALOS PALSAR PALSAR SAR

*

Takumi Onuma*

et al.,

et al., et al., et

al., et al., et al.,

Key words

Abstract

SAR

: SLC

Surface Deformation Patterns Associated with the

Noto Hanto Earthquake Detected by Satellite SAR Dif-

ferential Interferometry

SAR

2, ,**1 -0+ -02

++, **+, + / ,+

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+* ,**1

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Page 2: Vol. pp. 2, ,**1 -0+ -02 &’ () * +,-./012304 SAR · Vol. pp. *e-mail: onuma@jgi.co.jp: ALOS, PALSAR, Noto Hanto earthquake, Di erential Interferometry, Surface displacement JGI,

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Table . List of PALSAR data used in the study.

Fig. . Doppler frequency change of PALSAR data acquired on February, .

GAMMA

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Page 5: Vol. pp. 2, ,**1 -0+ -02 &’ () * +,-./012304 SAR · Vol. pp. *e-mail: onuma@jgi.co.jp: ALOS, PALSAR, Noto Hanto earthquake, Di erential Interferometry, Surface displacement JGI,

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Page 6: Vol. pp. 2, ,**1 -0+ -02 &’ () * +,-./012304 SAR · Vol. pp. *e-mail: onuma@jgi.co.jp: ALOS, PALSAR, Noto Hanto earthquake, Di erential Interferometry, Surface displacement JGI,

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Page 7: Vol. pp. 2, ,**1 -0+ -02 &’ () * +,-./012304 SAR · Vol. pp. *e-mail: onuma@jgi.co.jp: ALOS, PALSAR, Noto Hanto earthquake, Di erential Interferometry, Surface displacement JGI,

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Nishimura, T., S. Fujiwara, M. Murakami, M. Tobita, H. Naka-

SAR

Fig. . Surface deformation in LOS direction derived from di erential interferometry

using PALSAR data pair.

L . cm

Constantini, M., , A novel phase unwrapping method

based on network programming. IEEE

, , .

Constantini, M. and P.A. Rosen, , A generalized phase

unwrapping approach for sparse data. Proceedings of

IGARSS ’ , Hamburg, June July, pp. .

Goldstein, R.M. and C.L. Werner, , Radar Interferogram

Filtering for Geophysical Applications,

, .

gawa, T. Sagiya and T. Tada, , The M . Earth-

quake triggered by volcanic inflation of Iwate volcano,

northern Japan, observed by satellite radar interfero-

metry, , .

Ozawa, S., M. Murakami, S. Fujiwara and M. Tobita, ,wrap un-Synthetic Aperture Radar Interferogram of thewrapKobe Earthquake and its Geodetic Inversion,

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Transaction onGeoscience and Remote Sensing,

Geophys. Res.Lett.,

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VISAT SAR interferometry, ,

mation Associated with the West O Fukuoka Pre-

fecture Earthquake Derived from ENVISAT/InSAR and

Ozawa, T., S. Nishimura and H. Ohkura, , Crustal Defor- wara and P.A. Rosen, , -D surface deformation of

the Usu eruption measured by matching of SAR

images, , .

Fault-slip Modeling, Yarai, H., T. Ozawa, T. Nishimura, T. Tobita and T. Imakiire,

, . , Crustal deformation associated with the northern

Tobita, M., S. Fujiwara, S. Ozawa, P.A. Rosen, E. J. Fielding, Miyagi earthquake detected by RADARSAT- and EN-

C.L. Werner, M. Murakami, H. Nakagawa, K. Nitta and

M. Murakami, , Deformation of the North Sak- .

halin earthquake detected by JERS- /SAR interfero- Received February ,

metry, , . Accepted March ,

Tobita, M., M. Murakami, H. Nakagawa, H. Yarai, S. Fuji-

Earth Planets Space,

Geophys. Res. Lett.,Report of the National Research In-

stitute for Earth Science and Disaster Prevention,

Earth, Planets and Space,

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