PGS: “Whoosh!”

The September meeting of the Potomac Geophysical Society will be held September 16th at the Fort Myer Officers’ Club in Arlington, VA in the Campaign Room.

This month’s talk will be:
Whoosh – The Avalanche Infrasound Source Mechanism
by Dr. Keith L. McLaughlin (SAIC, McLean, VA).

Biographical Information:
Dr. McLaughlin began modeling infrasound sources, propagation and sensors in the early 1990s to provide monitoring system performance projections in support of the Comprehensive Test Ban Treaty (CTBT) negotiations. An understanding of the physics behind the many natural and man-made infrasound sources is useful in assessing infrasound monitoring as well as just plain fun.

Dinner Menu
Chicken Marsala (House salad & vegetab les, rolls and butter)
Vanilla Ice Cream
Coffee / tea
A vegetarian meal can be substituted by request.

Reception at 6:30. Dinner at 7:30. Talk at 8:30 PM. Please note that the talk starts earlier than the usual time. Allow 15 minutes for security entering Ft. Myer as all civilian vehicles are searched. To ensure access to and from Fort Myer use the Hatfield Gate, open 24 hours a day ( If you wish to attend dinner ($25), please make reservations with Joydeep Bhattacharyya at 571-269-8432 or via E-mail at If you wish, please feel free to attend the talk without dinner. Non-members and guests are welcome. Visit the PGS web site for new meeting announcements, etc. Please send changes of address or email to


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