[californiadisasters] Re: [California's Earthquake Forum] Is This A Doublet Or a Single Event? (Anza Quake)

It now appears it was two M4.7's and one M4.6 all within one minute so their waves all got combined together making it feel like one event.
I also suspect given how far northwest it was felt that there was directivity involved meaning the quake ruptured up the fault from south to north.

Kimmer

On Mon, Mar 11, 2013 at 10:15 AM, Kim Noyes <kimnoyes@gmail.com> wrote:

Pretty vigorous aftershock sequence thus far, too.

On Mon, Mar 11, 2013 at 10:13 AM, Hardin Rich <hardinrich@sbcglobal.net> wrote:

 

These have been revised. It's now shown as-- MAP 5.2 2013/03/11 16:56:05 33.498 -116.462 0.1 21 km ( 13 mi) ESE of Anza, CA MAP 4.7 2013/03/11 16:55:42 33.506 -116.476 0.1 19 km ( 12 mi) ESE of Anza, CA     --- On Mon, 3/11/13, Kim Noyes <kimnoyes@gmail.com> wrote: From: Kim Noyes <kimnoyes@gmail.com> Subject: [California's Earthquake Forum] Is This A Doublet Or a Single Event? (Anza Quake) To: "CaliforniaDisasters" <californiadisasters@yahoogroups.com>, "California's Earthquake Forum" <californiasearthquakeforum@yahoogroups.com>, "Geology2" <geology2@yahoogroups.com> Date: Monday, March 11, 2013, 10:05 AM   Magnitude 5.2 Date-Time Monday, March 11, 2013 at 16:56:05 UTC Monday, March 11, 2013 at 09:56:05 AM at epicenter Location 33.498°N, 116.462°W Depth 0.1 km (~0.1 mile) (poorly constrained) Region SOUTHERN CALIFORNIA Distances 21 km (13 miles) ESE (108°) from Anza, CA 25 km (16 miles) SW (218°) from La Quinta, CA 27 km (17 miles) SSW (199°) from Palm Desert, CA 33 km (20 miles) SW (221°) from Indio, CA 37 km (23 miles) S (170°) from Palm Springs, CA 102 km (64 miles) NE (38°) from San Diego, CA ------------------------- Magnitude 5.2 Date-Time Monday, March 11, 2013 at 16:56:05 UTC Monday, March 11, 2013 at 09:56:05 AM at epicenter Location 33.498°N, 116.462°W Depth 0.1 km (~0.1 mile) (poorly constrained) Region SOUTHERN CALIFORNIA Distances 21 km (13 miles) ESE (108°) from Anza, CA 25 km (16 miles) SW (218°) from La Quinta, CA 27 km (17 miles) SSW (199°) from Palm Desert, CA 33 km (20 miles) SW (221°) from Indio, CA 37 km (23 miles) S (170°) from Palm Springs, CA 102 km (64 miles) NE (38°) from San Diego, CA -- Check out http://groups.yahoo.com/group/californiadisasters/ Read my blog at http://eclecticarcania.blogspot.com/ My Facebook: http://www.facebook.com/derkimster Linkedin profile: http://www.linkedin.com/pub/kim-noyes/9/3a1/2b8 Follow me on Twitter @DisasterKim

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