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Tsunami waarschuwing Indische Oceaan
- Topic starter Stephen Graham
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vsral
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WowwKhoop dat er niet veel gewonden zullen vallen.
Mijn gedachtes gaan nu al uit naar de mensen die daar zijn!
De voorspelbare reacties beginnen nu al.
PatrickvH
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Masters
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Sinds wanneer bestaan er oceanen met een diepte van 33km?
dat is de diepte van de beving.........dat geven ze altijd aan bij aardbevingen, heeft dus geen drol met de oceaan te maken.
pasta saus
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"
This appears to have been a strike-slip earthquake (focal mechanism). It is unlikely that there will be a devastating tsunami.
edit: I should explain further. Tsunamis are generated by displacement of water. In the case of the 2004 Indian Ocean earthquake, it was a megathrust which displaced a lot of water vertically, like so. This earthquake was almost purely strike-slip. Strike-slip earthquakes are completely horizontal--there is no vertical displacement. Since the vertical displacement of this earthquake will be relatively limited, the amount of water displaced and therefore tsunami is also likely to be limited.
edit2: I should further note that a devastating tsunami is not likely, at least not like the 2004 one, but I do not know exactly how large a tsunami this earthquake may generate. To generate a tsunami, you must have vertical uplift of water. It is not impossible for strike-slip earthquakes to generate vertical uplift of water, however. If the strike-slip movement is towards the continental slope, there may still be some vertical offset. Imagine that the earthquake occurs in an area with 100m depth water, and the strike-slip motion is towards shallower water and land. The huge 100m stack of that water lying above the epicenter then moves towards land, too, where the water may only be 80m deep. Suddenly you've just produced 20m of vertical offset because you moved a 100m deep stack of water to an area that's only 80m deep. The strike-slip motion appears to be in ESE oblique against Indonesia, though, so I still doubt a devastating tsunami.
"
This appears to have been a strike-slip earthquake (focal mechanism). It is unlikely that there will be a devastating tsunami.
edit: I should explain further. Tsunamis are generated by displacement of water. In the case of the 2004 Indian Ocean earthquake, it was a megathrust which displaced a lot of water vertically, like so. This earthquake was almost purely strike-slip. Strike-slip earthquakes are completely horizontal--there is no vertical displacement. Since the vertical displacement of this earthquake will be relatively limited, the amount of water displaced and therefore tsunami is also likely to be limited.
edit2: I should further note that a devastating tsunami is not likely, at least not like the 2004 one, but I do not know exactly how large a tsunami this earthquake may generate. To generate a tsunami, you must have vertical uplift of water. It is not impossible for strike-slip earthquakes to generate vertical uplift of water, however. If the strike-slip movement is towards the continental slope, there may still be some vertical offset. Imagine that the earthquake occurs in an area with 100m depth water, and the strike-slip motion is towards shallower water and land. The huge 100m stack of that water lying above the epicenter then moves towards land, too, where the water may only be 80m deep. Suddenly you've just produced 20m of vertical offset because you moved a 100m deep stack of water to an area that's only 80m deep. The strike-slip motion appears to be in ESE oblique against Indonesia, though, so I still doubt a devastating tsunami.
"
PatrickvH
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dat is de diepte van de beving.........dat geven ze altijd aan bij aardbevingen, heeft dus geen drol met de oceaan te maken.
Dat vermoeden had ik al, kan het anders ook niet plaatsen, maar is wel incompleet neergezet.
kidmonster
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meer dode = meer zuurstof voor de levende zielen in de westerse wereld, win winWoww
Mijn gedachtes gaan nu al uit naar de mensen die daar zijn!
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gewoonlekkel
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Hoop dat Aceh iig niet zo'n klapper krijgt als vorige keer.
Een beter milieu begint bij jezelf..
