There were two interesting earthquakes near the northern tip of the Island of Sumatra whilst I was off on a field trip with some HSU geology students. So, I think it prudent to review these earthquakes now. These earthquakes happened…
Earthquake Report: Cape Mendocino Region
We just had an interesting earthquake in the region of the Mendocino triple junction. Recent earthquakes in this region show different fault plane solutions, owing to complexity of this area. In 1983 there was an earthquake ~10 km to the…
Earthquake Report: New Britain
We just had an earthquake with a USGS magnitude of M 6.5 along the subduction zone formed by the convergence of the Solomon Sea plate on the south and the South Bismarck plate on the north. Here is the USGS…
Earthquake Report: Banda Sea
Earlier this week there was a moderate earthquake along a strike-slip fault that appears to adjoin the Banda/Timor/Java Arc with New Guinea. This strike-slip fault appears to cross oblique to the subduction zone that forms the Timor Trench to the…
Earthquake Report: Alaska
We had an earthquake a few days ago along the Cook Strait west of Anchorage, Alaska. This earthquake happened nearby a couple earthquakes from the past 2 years that have similar senses of motion along faults that seem to be…
Earthquake Report: EOTD Chile M 8.8 2010.02.27
Earthquake of the Day: 2010.02.27 M 8.8 Maule, Chile. There was an earthquake with a magnitude of M 8.8 on this day in 2010. I have prepared an interpretive poster that shows the extent of ground shaking modeled for this…
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.…
Radio Show Material: KHUM with Lyndsey Battle
Radio Show KHUM with Lyndsey Battle I prepared this material to prepare for a radio show that I participated in with Lyndsey Battle on KHUM. Here is the page on the KHUM website for this radio show. Here is a…
Earthquake Report: 1700 Cascadia subduction zone 317 year commemoration
Today (possibly tonight at about 9 PM) is the birthday of the last known Cascadia subduction zone (CSZ) earthquake. There is some evidence that there have been more recent CSZ earthquakes (e.g. late 19th century in southern OR / northern…
Earthquake Report: Bougainville! (western equatorial Pacific)
Last night (my time) we had a large earthquake along a plate boundary that is one of the most tectonically active regions in the world. There was an earthquake with a magntude of M 7.9 along the San Cristobal Trench…