1674 Ambon earthquake and megatsunami: Difference between revisions
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The '''1674 Ambon earthquake''' occurred on February 17 at between 19:30 and 20:00 local time somewhere in the Maluku Islands. The resulting tsunami reached heights of up to 100 meters |
The '''1674 Ambon earthquake''' occurred on February 17 at between 19:30 and 20:00 local time somewhere in the Maluku Islands. The resulting tsunami reached heights of up to 100 meters on Ambon Island killing over 2,000 individuals. It was the first detailed documentation of a tsunami in Indonesia and the largest ever recorded in the country.<ref name="AA" /> |
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==Tectonic setting== |
==Tectonic setting== |
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The tectonics of the North Maluku Islands is dominated by complex collision, subduction and strike-slip elements. Intermediate to deep focus earthquakes with focal depth of 60 km or greater is immediately ruled out as the souce because no known historical events of the same kind has generated a large tsunami. The 1938 Banda Sea earthquake, an intermediate depth magnitude 8.5 event only caused a minor tsunami. |
The tectonics of the North Maluku Islands is dominated by complex collision, subduction and strike-slip elements. Intermediate to deep focus earthquakes with focal depth of 60 km or greater is immediately ruled out as the souce because no known historical events of the same kind has generated a large tsunami. The [[1938 Banda Sea earthquake]], an intermediate depth magnitude 8.5 event only caused a minor tsunami.<ref name="AA" /> |
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The Seram Trough is a zone of complex convergence between the Pacific, Australian, Sunda and numerous micro tectonic plates. This megathrust fault is located north of Seram Island. While it has generated large tsunamigenic earthquakes in the past such as that in 1899 and 1629, the fault is situated too far from Ambon to have caused huge tsunami run-ups. |
The [[Seram Trough]] is a zone of complex convergence between the Pacific, Australian, Sunda and numerous micro tectonic plates. This megathrust fault is located north of Seram Island. While it has generated large tsunamigenic earthquakes in the past such as that in 1899 and 1629, the fault is situated too far from Ambon to have caused huge tsunami run-ups. |
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==Source== |
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Since the tsunami from the earthquake had an extreme run-up height of at least 100 meters, researchers have dismissed the possibility of faulting as a source of the tsunami. Instead, an earthquake-generated landslide appear to be the likely source of the tsunami. However, the source if the earthquake has never been determined.<ref name="AA">{{cite journal |last1=Pranantyo, I.R., Cummins, P.R. |title=The 1674 Ambon Tsunami: Extreme Run-Up Caused by an Earthquake-Triggered Landslide |journal=Pure and Applied Geophysics |date=2020 |volume=177 |pages=1639–1657 |doi=10.1007/s00024-019-02390 |url=https://link.springer.com/content/pdf/10.1007/s00024-019-02390-2.pdf |access-date=15 May 2021}}</ref> |
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==Historical accounts== |
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==See also== |
==See also== |
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==References== |
==References== |
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Revision as of 05:09, 15 May 2021
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| Local date | February 17, 1674 |
|---|---|
| Local time | 19:30 to 20:00 EIT |
| Magnitude | Unk. |
| Epicenter | 3°45′00″S 127°45′00″E / 3.750°S 127.750°E |
| Areas affected | Banda Sea, Indonesia |
| Tsunami | 100 m |
| Casualties | 2,347 dead |
The 1674 Ambon earthquake occurred on February 17 at between 19:30 and 20:00 local time somewhere in the Maluku Islands. The resulting tsunami reached heights of up to 100 meters on Ambon Island killing over 2,000 individuals. It was the first detailed documentation of a tsunami in Indonesia and the largest ever recorded in the country.[1]
Tectonic setting
The tectonics of the North Maluku Islands is dominated by complex collision, subduction and strike-slip elements. Intermediate to deep focus earthquakes with focal depth of 60 km or greater is immediately ruled out as the souce because no known historical events of the same kind has generated a large tsunami. The 1938 Banda Sea earthquake, an intermediate depth magnitude 8.5 event only caused a minor tsunami.[1]
The Seram Trough is a zone of complex convergence between the Pacific, Australian, Sunda and numerous micro tectonic plates. This megathrust fault is located north of Seram Island. While it has generated large tsunamigenic earthquakes in the past such as that in 1899 and 1629, the fault is situated too far from Ambon to have caused huge tsunami run-ups.
Source
Since the tsunami from the earthquake had an extreme run-up height of at least 100 meters, researchers have dismissed the possibility of faulting as a source of the tsunami. Instead, an earthquake-generated landslide appear to be the likely source of the tsunami. However, the source if the earthquake has never been determined.[1]
See also
References
- ^ a b c Pranantyo, I.R., Cummins, P.R. (2020). "The 1674 Ambon Tsunami: Extreme Run-Up Caused by an Earthquake-Triggered Landslide" (PDF). Pure and Applied Geophysics. 177: 1639–1657. doi:10.1007/s00024-019-02390. Retrieved 15 May 2021.
{{cite journal}}: CS1 maint: multiple names: authors list (link)