Revisiting Sunda Subduction: Possible Implications for Earthquake Activity

  • Thread starter cph
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In summary, the conversation discusses the possibility of water acting as a lubricant in facilitating large earthquakes in Sumatra, where there are no active volcanoes releasing water from the slab. However, the first two questions are unclear and there is currently more volcanic activity on Java than on Sumatra.
  • #1
cph
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Was there slippage overlapping with same previous slippage? First time? Sumatra has no volcanoes, so water is not released from slab. might water act as lubricant; hence facilatating unprecedented following large earthquake?
 
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cph said:
Was there slippage overlapping with same previous slippage? First time? Sumatra has no volcanoes, so water is not released from slab. might water act as lubricant; hence facilatating unprecedented following large earthquake?
The first two questions are unclear. The Sunda Subduction is basically where the Australia Plate is pushing into the Eurasia (Asia) Plate.

Is this a reference to the recent earthquake - Magnitude 7.2 - NORTHERN SUMATRA, INDONESIA, 09 May 2010 05:59:42 UTC?

There are plenty of volcanos on Sumatra, but most are not active - not like those on Java.
http://www.volcano.si.edu/world/region.cfm?rnum=0601

Marapi (not Merapin on Java) was last active during 2004.
http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-14=

Talang was active during 2007
http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-16=

Java certainly has more volcanic activity currently than Sumatra.
http://www.volcano.si.edu/world/region.cfm?rnum=0603
http://www.volcano.si.edu/world/volcano.cfm?vnum=0603-25= Merapi
http://www.volcano.si.edu/world/volcano.cfm?vnum=0603-30= Semeru (currently active)
 

Related to Revisiting Sunda Subduction: Possible Implications for Earthquake Activity

1. What is Sunda Subduction and why is it important?

Sunda Subduction is a geological process where the Indo-Australian Plate is subducting beneath the Sunda Plate, creating a subduction zone in Southeast Asia. This area is important because it is highly seismically active and has the potential to generate large earthquakes and tsunamis.

2. What new information does this study provide about Sunda Subduction?

This study suggests that the subduction of the Indo-Australian Plate may be occurring at a faster rate than previously thought. This could have implications for earthquake activity in the region, as well as for the understanding of plate tectonics.

3. How was this study conducted?

The researchers used data from seismometers and GPS stations to measure the movement of the Earth's crust in the region. They also analyzed historical earthquake data and geological records to better understand the history of Sunda Subduction.

4. What are the potential implications of this study?

If the subduction of the Indo-Australian Plate is occurring at a faster rate, it could lead to an increase in earthquake activity in the region. This could also impact the distribution of strain and stress along the subduction zone, potentially affecting the likelihood of a large earthquake occurring.

5. What future research is needed in this area?

Further research is needed to confirm and better understand the findings of this study. This could include more detailed analysis of seismic and GPS data, as well as continued monitoring of the region to track any changes in earthquake activity. Additionally, studying other subduction zones around the world could provide valuable insights into the processes and implications of subduction.

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