eNatech - Natural Hazard

Natural Hazard

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Type

Earthquake

Name

Tokachi-oki earthquake

Date

2003/09/26

Local Time

04:50

Status

Published

Location

Country of Origin

Japan

Province of Origin

Hokkaido

Occurrence

Magnitude

8.3 M_w

Intensity

IX MSK

PGA

0.75 g

Description of the Occurrence

The earthquake was characterized by ground motions with large amplitude and long period (4-8 s) in the Yufutsu sedimentary basin. This generated a tsunami with an estimated wave height of 4 m along the southeastern coast of Hokkaido. The earthquake was followed by further earthquakes with moment magnitudes ranging between 4-7.

Consequences

Area Affected

10,000 - 100,000 km²

Population Affected

100 - 1,000

Injured

100 - 1,000

Economic Losses

10 - 100 M USD

Description of the Consequences

Due to the earthquake at least 589 people were injured, extensive damage, landslides and power outages occurred, and many roads were damaged in southeastern Hokkaido.

ID: 61, Created: Vincenzo ARCIDIACONO, 2014-09-09 12:31:11 – Last Updated: Elisabeth KRAUSMANN, 2017-07-13 15:34:30

Attachments

No	Description		File Size
1.Click here to select record	Slip distribution of the 2003 Tokachi-oki earthquake estimated from tsunami waveform inversion		605.54KB

Natech Accidents

No	Date		Site ID
1.Click here to select record	2003/09/26		Hokkaido Refinery