Sunday, August 24, 2014

24 August 2014 M6 Earthquake northern San Francisco Bay area (6km NW of American Canyon, California)

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An M6 strike-slip earthquake occurred in the northern San Francisco Bay area last night (3:20 am local time). It is reported as 6 km NW of A...
Tuesday, August 19, 2014

Maricopa county flood control rainfall and runoff links -- Phoenix area heavy ppt and runoff August 19, 2014

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Dramatic weather today! Looks like as much as 4” rainfall in the last 24 hours in the northern part of Maricopa County drove lots of excitin...
Thursday, August 7, 2014

[Old fashioned] surveying using an electronic total station: a ~20 year old paper reminds me of the power of detailed 3D mapping

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I recall as a graduate student how revolutionary the electronic total station was. I became completely obsessed, and wrote a user manual (af...
Sunday, June 29, 2014

M5 Earthquake in Eastern Arizona last night (June 28, 2014)

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This is quite interesting and unusual historically. There was an earthquake in SE Arizona near the New Mexico border at about 10 pm local ti...
Monday, May 26, 2014

Structure from Motion micro documentary from Merri Lisa Trigilio

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Readers may know my current obsession with Structure from Motion (SfM). Here is a new 5 minute long documentary from Merri Lisa Trigilio on...
Tuesday, April 1, 2014

Links and comments on M8.2 - 95km NW of Iquique, Chile April 2, 2014

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This evening there was a M8.2 earthquake along the northern Chilean subduction zone. It caused very strong shaking along the Chilean coast. ...
Monday, March 31, 2014

Exploiting high resolution topography data for advancing the understanding of mass and energy transfer across landscapes: Opportunities, challenges, and needs (USGS Powell Center working group)

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"TIME FOR IN-DEPTH ANALYSIS WITHOUT DISTRACTIONS"--That is one of the opportunities presented to USGS Powell Center Working Groups...