sumatra - Jay Patton online

Plate Tectonics: 200 Ma

Gibbons and others (2015) have put together a suite of geologic data (e.g. ages of geologic units, fossils), plate motion data (geometry of plates and ocean ridge spreading rates), and plate tectonic data (initiation and cessation of subduction or collision,…

Andaman Sea Earthquake!

Today we had a small earthquake in the Andaman Sea, west of Thailand and east of the Andaman Isles (India). The Andaman Sea is a region of backarc spreading and connects the Sumatra fault (a (strike-slip) sliver fault that accommodates…

Earthquake near Siberut, Indonesia: Sumatra Megathrust

Yesterday (I was busy getting a Mt. St. Helens field trip together, here is the link for that) we had an earthquake with a magnitude M = 6.1. While this is not a large earthquake, it is notable because this…

Tohoku-Oki Aftershocks Continue

The aftershocks continue offshore northeast Japan. The recent swarm appear to align along a northwesterly strike (trend). Here is the USGS web page for the earthquake from today. This is the USGS web page for the largest magnitude earthquakes in…

Sumatra-Andaman subduction zone 2014/12/26: Slip, Deformation, and Energy

Here is an update to my post earlier on the 2004 Sumatra-Andaman subduction zone earthquake of 2004/12/26 (about a decade ago). This series of plots show the large variation in non unique slip models for this earthquake. The authors divide…

Boxing Day Earthquake: Sumatra-Andaman subduction zone 2014/12/26

The Decadal Anniversary is coming up and I will be posting some material regarding the earthquake and tsunami that changed the lives of millions. This Mw 9.15 earthquake, slightly smaller in magnitude than the M 9.2 Good Friday Earthquake of…

Indian Ocean M 5.4 2014/03/27

Good Morning! A very coolio M 5.4 earthquake in the northern Indian Ocean between the Ninetyeast Ridge and Sri Lanka. Here is the USGS webpage for this earthquake. This is interesting because it is northwest of a swarm of earthquakes…

Andaman Sea Swarm M 6.5

Here is a good sized earthquake swarm in the Andaman Sea. I am a little late posting this, I was otherwise detained. Here is the USGS webpage for the Mw 6.5 earthquake. The Andaman Sea is a region of back-arc…

I Just Uploaded My Dissertation

woot woot I will be submitting the remaining two papers in the coming weeks. I am still “on target” until then. Below are links to the two files I uploaded to the digital scholar. The final signature page needs to…

Simuelue Swarm 2013/12/01-02

Here is a series of earthquakes in the region of the 2005 great Sumatra-Andaman subduction zone earthquake. These earthquake epicenters plot very close to the epicenter of the 2005 earthquake. The island just northwest of today’s earthquake is named Simeulue.…

Category: sumatra (page 2)