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| Titel |
Field observations of the 17 July 2006 Tsunami in Java |
| VerfasserIn |
F. Lavigne, C. Gomez, M. Giffo, P. Wassmer, C. Hoebreck, D. Mardiatno, J. Prioyono, R. Paris |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 7, no. 1 ; Nr. 7, no. 1 (2007-02-09), S.177-183 |
| Datensatznummer |
250004339
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| Publikation (Nr.) |
 copernicus.org/nhess-7-177-2007.pdf |
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| Zusammenfassung |
The 17 July 2006, a tsunami struck the southern coast of Java, Indonesia,
causing over 730 casualties. The triggering earthquake located 225 km off
the coast of Pangandaran (9.222° S, 107.320° E), occurred at 15:19 LT
(UTC +7) with a 7.7 magnitude on the Richter scale (Harward Center and
CEA/DAM). In order to calibrate numerical models and understand the
phenomenon, we conducted a 6-weeks field survey in July and August 2006 from
Cimerak district in West Java to Gunung Kidul district in Central Java. Data
collection involved measurements of wave height before its breaking, flow
depth, run-up height, inundation depth, flow directions and a detailed
chronology of the tsunami.
Eyewitnesses accounted for three main waves. The maximum height of the
second wave ranged from 4.2 to 8.6 m before its breaking. Maximum flow depth
after the wave's breaking reached 5 m, and maximum runup heights reached
15.7 m. Our run-up values are about 1.5 higher than those obtained by the
other field surveys carried out until present. They are also higher than the
values computed through preliminary models.
The 17 July 2006 tsunami has been generated by a "tsunami earthquake",
i.e. an earthquake of low or medium scale that triggers a tsunami of high
magnitude. The run-up heights progressively decreased eastwards, which is
consistent with a tsunami triggered by fault dislocation, as the one that
hit the Nicaragua's coast with similar run-up heights on the 2 September
1992. An earthquake with associated landslides could also have generated the
17 July 2006 tsunami, as ever observed in Papua-New-Guinea in 1998. |
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