Sociable

Tuesday, July 5, 2011

Months Long Earthquake Swarm Very Active Again In Nevada



This week, we have had 56 small to medium magnitude earthquakes near Hawthorne, Nevada. I have been watching this ongoing earthquake swarm starting in March, 2011. Like I have mentioned often before, this swarm is made of more than a 1000 shallow earthquakes, dozens at around 4 mag or more in strength. Many of the quakes are near surface, and many do not have the typical sharp onset type waveform associated with simple tectonic cracking. In simple words, I mean that many of these near surface quakes are not your everyday ordinary fault driven waveform earthquake. Some of these hint at volcanic harmonics, and most of them are typical near surface slow onset waveforms seen around some volcanos. I'm not going to make any claims or make any conclusions, for this swarm does indeed puzzle me. But some research team needs to consult a volcanologist on this one. Indeed.

Take a look at the top waveform, from a station of instruments closest to the swarm. Here is an earthquake within an hour of this writing with the slow onset waveform.

Here are the earthquakes listed this week in the area. Those listed as being near Hawthorne, Nevada are the quakes I'm referring to. To take a look for yourself, Google 'recent earthquakes' and surf the USGS and other sites, and surf the University of Nevada's Geophysics Department, and various threads on the Hawthorne quakes. I'm putting the ball in my reader's court, while I simply scratch my head, grab some equipment and drive on up there.

2.22011/07/0514:16:5838.428N118.740W4.715 km ( 9 mi) SW of Hawthorne, NV1.42011/07/0512:45:0237.538N118.873W6.514 km ( 9 mi) SE of Mammoth Lakes, CA1.02011/07/0512:41:5937.541N118.868W6.814 km ( 9 mi) SE of Mammoth Lakes, CA2.12011/07/0502:38:3338.424N118.739W4.615 km ( 9 mi) SW of Hawthorne, NV1.82011/07/0500:39:3638.402N118.663W1.414 km ( 9 mi) SSW of Hawthorne, NV2.12011/07/0421:16:1938.424N118.737W5.315 km ( 9 mi) SW of Hawthorne, NV2.12011/07/0420:49:5338.428N118.745W2.915 km ( 9 mi) SW of Hawthorne, NV2.72011/07/0419:46:4738.424N118.740W2.715 km ( 9 mi) SW of Hawthorne, NV2.32011/07/0419:35:2438.428N118.736W5.915 km ( 9 mi) SW of Hawthorne, NV3.62011/07/0419:30:3038.423N118.742W3.515 KM (10 MI) SW OF HAWTHORNE, NV1.62011/07/0410:41:0938.424N118.740W1.315 km ( 9 mi) SW of Hawthorne, NV2.12011/07/0406:57:4838.409N118.735W1.116 km (10 mi) SW of Hawthorne, NV1.42011/07/0405:53:4538.426N118.729W0.014 km ( 9 mi) SW of Hawthorne, NV1.62011/07/0405:43:5538.240N118.811W10.218 km (11 mi) E of Bodie, CA2.22011/07/0405:17:4838.430N118.738W2.815 km ( 9 mi) SW of Hawthorne, NV2.02011/07/0405:16:3438.427N118.734W1.515 km ( 9 mi) SW of Hawthorne, NV2.92011/07/0405:13:0238.423N118.735W0.515 km ( 9 mi) SW of Hawthorne, NV2.72011/07/0404:56:0138.425N118.743W2.815 km ( 9 mi) SW of Hawthorne, NV1.92011/07/0404:28:2438.419N118.762W0.017 km (11 mi) SW of Hawthorne, NV2.32011/07/0316:53:1237.483N118.843W6.717 km (10 mi) WSW of Toms Place, CA1.12011/07/0314:40:0137.410N118.533W6.46 km ( 4 mi) E of Round Valley, CA1.92011/07/0307:33:0238.440N118.729W1.013 km ( 8 mi) SW of Hawthorne, NV1.22011/07/0306:48:4437.563N118.848W2.114 km ( 9 mi) SE of Mammoth Lakes, CA2.02011/07/0304:31:3338.411N118.741W0.016 km (10 mi) SW of Hawthorne, NV2.32011/07/0304:25:4138.400N118.784W0.020 km (12 mi) SW of Hawthorne, NV1.82011/07/0302:43:0638.438N118.740W0.014 km ( 9 mi) SW of Hawthorne, NV1.92011/07/0301:50:2038.414N118.741W4.316 km (10 mi) SW of Hawthorne, NV1.82011/07/0217:51:2237.061N117.215W11.912 km ( 7 mi) ENE of Scottys Castle, CA1.92011/07/0215:57:4138.438N118.740W0.014 km ( 9 mi) SW of Hawthorne, NV1.82011/07/0213:48:0738.418N118.742W5.016 km (10 mi) SW of Hawthorne, NV2.92011/07/0212:42:4538.420N118.749W1.016 km (10 mi) SW of Hawthorne, NV1.22011/07/0211:50:2238.440N118.726W5.813 km ( 8 mi) SW of Hawthorne, NV1.72011/07/0207:20:2937.569N118.868W4.812 km ( 8 mi) SE of Mammoth Lakes, CA1.62011/07/0206:39:1238.443N118.732W3.113 km ( 8 mi) SW of Hawthorne, NV1.02011/07/0202:14:1537.523N118.803W13.112 km ( 7 mi) WSW of Toms Place, CA1.82011/07/0200:45:1338.421N118.749W2.916 km (10 mi) SW of Hawthorne, NV1.42011/07/0109:25:1937.354N117.094W5.116 km (10 mi) ENE of Tokop, NV1.32011/06/3016:20:1637.539N118.832W0.814 km ( 8 mi) W of Toms Place, CA1.12011/06/3015:54:4937.561N118.850W0.914 km ( 9 mi) SE of Mammoth Lakes, CA1.12011/06/3014:03:3238.000N118.774W8.731 km (19 mi) E of Lee Vining, CA1.32011/06/3009:20:4937.386N118.826W11.520 km (13 mi) W of Round Valley, CA1.82011/06/3007:40:2437.163N117.374W12.615 km ( 9 mi) NNW of Scottys Castle, CA2.12011/06/3006:48:3837.167N117.372W11.515 km ( 9 mi) N of Scottys Castle, CA1.92011/06/3005:21:0437.451N118.439W4.810 km ( 6 mi) N of West Bishop, CA1.32011/06/3005:19:4637.452N118.440W4.510 km ( 6 mi) N of West Bishop, CA1.62011/06/3000:54:2937.124N118.447W13.414 km ( 9 mi) WSW of Big Pine, CA2.52011/06/2923:38:4838.439N118.737W2.914 km ( 9 mi) SW of Hawthorne, NV2.42011/06/2921:49:5538.385N118.753W3.619 km (12 mi) SW of Hawthorne, NV2.02011/06/2910:45:3138.440N118.725W3.413 km ( 8 mi) SW of Hawthorne, NV2.02011/06/2909:34:4938.438N118.740W0.014 km ( 9 mi) SW of Hawthorne, NV2.72011/06/2908:22:2938.444N118.720W3.012 km ( 8 mi) SW of Hawthorne, NV2.62011/06/2907:30:0838.438N118.740W8.014 km ( 9 mi) SW of Hawthorne, NV3.52011/06/2906:24:5338.442N118.731W3.313 KM ( 8 MI) SW OF HAWTHORNE, NV2.62011/06/2905:31:2538.440N118.731W2.713 km ( 8 mi) SW of Hawthorne, NV1.62011/06/2900:37:2037.570N118.868W4.812 km ( 8 mi) SE of Mammoth Lakes, CA2.02011/06/2900:02:1338.480N118.680W5.07 km ( 4 mi) SW of Hawthorne, NV2.22011/06/2900:00:5438.437N118.734W2.514 km ( 9 mi) SW of Hawthorne, NV2.32011/06/2821:28:2938.440N118.740W2.914 km ( 9 mi) SW of Hawthorne, NV1.92011/06/2819:49:1938.442N118.743W2.814 km ( 9 mi) SW of Hawthorne, NV

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