Recent USGS Significant Earthquakes- M 6.3 - 250km SE of Iwo Jima, Japan 2018/08/20
- M 8.2 - 280km NNE of Ndoi Island, Fiji 2018/08/20
- M 4.4 - 7km NE of Aguanga, CA 2018/08/20
- M 6.9 - 2km S of Belanting, Indonesia 2018/08/20
- M 6.6 - 50km S of Tanaga Volcano, Alaska 2018/08/20
- M 6.3 - 6km NE of Sembalunlawang, Indonesia 2018/08/20
- M 6.9 - 0km SW of Loloan, Indonesia 2018/08/20
- M 6.1 - 14km N of Golfito, Costa Rica 2018/08/19
- M 6.4 - 5km WNW of Obelobel, Indonesia 2018/08/19
- M 6.5 - 109km NNW of Kampungbajo, Indonesia 2018/08/19
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- Cascadia GeoSciences 2012/05/23
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- Last Night on the R/V Tangaroa 2016/11/21
- Sunset 2016/11/19
- Earthquake Response Cores 2016/11/18
Category Archives: Indian Ocean
Earthquake Report: Lombok, Indonesia
Earlier today there was a shallow M 6.4 earthquake with an epicenter on the island of Lombok, Indonesia. With a hypocentral depth of about 7.5 km, this size of an earthquake can be quite damaging. The USGS PAGER estimate of … Continue reading
Posted in australia, collision, earthquake, education, geology, Indian Ocean, Indonesia, pacific, plate tectonics, subduction
Earthquake Report: Madagascar!
Today there was an earthquake in a region that we don’t hear about that often. Madagascar is off the coast of southeastern Africa and the oceanic basin to the west is likely formed as part of the East Africa Rift … Continue reading
Posted in africa, earthquake, education, geology, Indian Ocean, plate tectonics, strike-slip
Earthquake Report: Burma!
There was an earthquake in Burma today! The epicenter plotted very close to the Sagaing fault (SF), a major dextral (right-lateral) strike-slip fault system, part of the plate boundary between the India and Eurasia plates. This fault system accommodates much … Continue reading
Posted in asia, collision, earthquake, education, geology, Indian Ocean, plate tectonics, strike-slip
Earthquake Report: Mentawai, Sumatra
We just had an earthquake in the Mentawai region of the Sunda subduction zone offshore of Sumatra. Here is the USGS website for this M 6.3 earthquake. Based upon the hypocentral depth and the current estimate of the location of … Continue reading
Posted in earthquake, education, geology, Indian Ocean, plate tectonics, subduction, sumatra
Earthquake Report: Bengkulu (Sumatra)!
Last night (my time) while I was tending to other business, there was an earthquake along the Sunda Megathrust. Here is the USGS website for this M 6.4 earthquake. This M 6.4 earthquake happened down-dip (“deeper than”) along the megathrust … Continue reading
Posted in asia, earthquake, education, geology, Indian Ocean, Indonesia, plate tectonics, subduction, sumatra
Earthquake Report: Makran subduction zone (Pakistan)!
There was a good sized earthquake along the Makran subduction zone. This subduction zone is a convergent plate boundary where the Arabia plate subducts (goes beneath) northwards under the Eurasia plate. There has been one aftershock reported by the USGS. … Continue reading
Posted in asia, geology, Indian Ocean, plate tectonics, subduction, tsunami
Earthquake Anniversary: Sumatra-Andaman 2004 M 9.2 & 2005 M 8.6
On 26 December 2004 there was an earthquake with a magnitude of M 9.2 along the Sumatra-Andaman subduction zone (SASZ). This earthquake is the third largest earthquake ever recorded by modern seismometers and ruptured nearly 2,000 km of the megathrust … Continue reading
Posted in asia, earthquake, education, geology, HSU, Indian Ocean, plate tectonics, subduction, sumatra, tsunami
Earthquake Report: Java Sea!
Last night as I was finishing work for the day, I noticed an earthquake in the Java Sea, just north of western Java. Here is the USGS website for this M 6.6 earthquake. This earthquake is extensional and plots very … Continue reading
Posted in collision, earthquake, education, geology, HSU, Indian Ocean, Indonesia, plate tectonics, subduction, sumatra
Earthquake Report: Burma!
Well, there was an earthquake about 6 hours ago in Burma. This M 6.8 earthquake was rather deep, which is good for the residents of that area (the ground motions diminish with distance from the earthquake hypocenter). Here is the … Continue reading
Posted in asia, collision, education, geology, HSU, Indian Ocean, plate tectonics, sumatra
Earthquake Report: Sumatra!
We just had a M = 7.8 earthquake southwest of the Island of Sumatra, a volcanic arc formed from the subduction of the India-Australia plate beneath the Sunda plate (part of Eurasia). Here is the USGS website for this earthquake. … Continue reading
Posted in asia, College Redwoods, earthquake, education, geology, HSU, Indian Ocean, Indonesia, plate tectonics, strike-slip, subduction, sumatra, Transform