[unav_all] From Ken Hudnut: AGU Late-Breaking Session, S22C: SW Pakistan M 7.7 Earthquake of 24 September 2013

Jaime Magliocca jmaglio at unavco.org
Wed Dec 4 11:34:30 MST 2013

Subject: AGU Late-Breaking Session, S22C: SW Pakistan M 7.7 Earthquake of 24 September 2013

AGU Late-Breaking Session:  Southwestern Pakistan M 7.7 Earthquake of 24 September 2013

Tuesday, Dec. 10, 2013 at 10:20 a.m. - 12:20 p.m. (Session S22C; Rm. 3006 Moscone West)

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Special Instructions for Potential Speakers:

Given the short time before AGU, there will not be time for abstract
submissions, and there will be a single "late breaking" oral session
10:20AM-12:20PM on Tuesday (and no poster session). With traditional talk
times, this means 8 talks, but it could be extended to up to 12 if talks are
shorter. To have anything listed in the "Late Breaking" program, we need
talk information sent to AGU by Thursday (tomorrow, 12/5!), so please send an email
to Ken Hudnut (hudnut at usgs.gov) and myself (tsai at caltech.edu) with your titles and
presenter names [author list] asap. There will be no abstracts. We will try
to accommodate everyone who submits a title but if there are more than 12 we
may have to decline some.

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Even if you previously submitted another 'contributed' abstract to the Fall AGU, don't worry,
you may still request to give a talk in this special late-breaking session.

The deadline is 12:00 p.m. PST, Thurs., Dec. 5; please send titles and author lists to us ASAP. 

Slides will need to be loaded at the speaker ready room as for any other session, with the
same amount of time in advance as usual.

Please plan to attend.

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Session Description:

Southwestern Pakistan M 7.7 Earthquake of 24 September 2013

A magnitude 7.7 earthquake occurred at shallow depth in south-central
Pakistan along the Chaman fault system on 24 September 2013, causing over
800 fatalities and heavy damage to more than 30 villages in the epicentral
area, including collapse of over 20,000 houses, that is, over two thirds of
the homes in the Arawan district of the remote Balochistan region. A ~250 km
long portion of the ~1,000 km long Chaman Fault system broke along a section
that lies in a transition zone between the north-south oriented northern
portion that accommodates left-lateral strike slip, and the southern portion
that transfers into a northeast-southwest oriented compressional fold and
thrust belt. East of this rupture zone, the India plate moves north relative
to the Eurasia plate, whereas west of this rupture zone, the Arabia plate
subducts northwards under the Eurasia plate, accounting for both the
northern strike-slip and southwestern compressional tectonics represented by
this earthquake and by the regional geological structures. This earthquake
began near a broad bend and ruptured both towards the north (with lateral
slip) and southwest (with oblique slip) from the epicenter, evidently with
the largest slip occurring towards the southwest. For this session,
contributions about the source properties and any other aspects of this
earthquake and its effects are encouraged.

Convenors:  Ken Hudnut (hudnut at usgs.gov) and Victor Tsai (tsai at caltech.edu)

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