{"id":1171,"date":"2015-05-06T09:14:22","date_gmt":"2015-05-06T14:14:22","guid":{"rendered":"https:\/\/blogs.mathworks.com\/loren\/?p=1171"},"modified":"2015-05-08T05:59:30","modified_gmt":"2015-05-08T10:59:30","slug":"matlab-used-to-map-earthquakes-from-satellite-data","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/loren\/2015\/05\/06\/matlab-used-to-map-earthquakes-from-satellite-data\/","title":{"rendered":"MATLAB Used to Map EarthQuakes from Satellite Data"},"content":{"rendered":"\r\n<div class=\"content\"><!--introduction--><p>A friend just pointed out to me a really cool article: <a href=\"http:\/\/www.wired.com\/2015\/04\/turns-satellites-work-great-mapping-earthquakes\/\">Turns Out Satellites Work Great for Mapping Earthquakes<\/a>.  It's about mapping earthquakes using satellite data.  This sounded intriguing because I know earth scientists use MATLAB after the fact to analyze seismic data, but I was less certain what exactly they might do with satellite data and earthquakes.  The article, centered on work by Bill Barnett from U. of Iowa, is very interesting.  Rather than wait for data to be processed well after events occur, Bill demonstrates what can be done with the data in a much shorter time period, allowing first responders to expedite their decision making regarding where, when, and how to respond to damaging events.<\/p><!--\/introduction--><p>I contacted Bill and verified that he uses MATLAB to perform calculations such as how much the earth moved, what kind of earthquake mechanism is in play, and how large the active fault dimensions are.  He shares his code <a title=\"http:\/\/myweb.uiowa.edu\/wbarnhart\/programs.html (link no longer works)\">here<\/a>. This sort of analysis may encourage data providers to make relevant data available as quickly as possible so scientists can collaborate with first responders as soon as possible.<\/p><p>Do you have an interesting story to tell with your data?  I bet you do! Let us know <a href=\"https:\/\/blogs.mathworks.com\/loren\/?p=1171#respond\">here<\/a>.<\/p><script language=\"JavaScript\"> <!-- \r\n    function grabCode_ab3c2643a18547e989f7890f6eff6f21() {\r\n        \/\/ Remember the title so we can use it in the new page\r\n        title = document.title;\r\n\r\n        \/\/ Break up these strings so that their presence\r\n        \/\/ in the Javascript doesn't mess up the search for\r\n        \/\/ the MATLAB code.\r\n        t1='ab3c2643a18547e989f7890f6eff6f21 ' + '##### ' + 'SOURCE BEGIN' + ' #####';\r\n        t2='##### ' + 'SOURCE END' + ' #####' + ' ab3c2643a18547e989f7890f6eff6f21';\r\n    \r\n        b=document.getElementsByTagName('body')[0];\r\n        i1=b.innerHTML.indexOf(t1)+t1.length;\r\n        i2=b.innerHTML.indexOf(t2);\r\n \r\n        code_string = b.innerHTML.substring(i1, i2);\r\n        code_string = code_string.replace(\/REPLACE_WITH_DASH_DASH\/g,'--');\r\n\r\n        \/\/ Use \/x3C\/g instead of the less-than character to avoid errors \r\n        \/\/ in the XML parser.\r\n        \/\/ Use '\\x26#60;' instead of '<' so that the XML parser\r\n        \/\/ doesn't go ahead and substitute the less-than character. \r\n        code_string = code_string.replace(\/\\x3C\/g, '\\x26#60;');\r\n\r\n        copyright = 'Copyright 2015 The MathWorks, Inc.';\r\n\r\n        w = window.open();\r\n        d = w.document;\r\n        d.write('<pre>\\n');\r\n        d.write(code_string);\r\n\r\n        \/\/ Add copyright line at the bottom if specified.\r\n        if (copyright.length > 0) {\r\n            d.writeln('');\r\n            d.writeln('%%');\r\n            if (copyright.length > 0) {\r\n                d.writeln('% _' + copyright + '_');\r\n            }\r\n        }\r\n\r\n        d.write('<\/pre>\\n');\r\n\r\n        d.title = title + ' (MATLAB code)';\r\n        d.close();\r\n    }   \r\n     --> <\/script><p style=\"text-align: right; font-size: xx-small; font-weight:lighter;   font-style: italic; color: gray\"><br><a href=\"javascript:grabCode_ab3c2643a18547e989f7890f6eff6f21()\"><span style=\"font-size: x-small;        font-style: italic;\">Get \r\n      the MATLAB code <noscript>(requires JavaScript)<\/noscript><\/span><\/a><br><br>\r\n      Published with MATLAB&reg; R2015a<br><\/p><\/div><!--\r\nab3c2643a18547e989f7890f6eff6f21 ##### SOURCE BEGIN #####\r\n%% MATLAB Used to Map EarthQuakes from Satellite Data\r\n% A friend just pointed out to me a really cool article:\r\n% <http:\/\/www.wired.com\/2015\/04\/turns-satellites-work-great-mapping-earthquakes\/\r\n% Turns Out Satellites Work Great for Mapping Earthquakes>.  It's about\r\n% mapping earthquakes using satellite data.  This sounded intriguing\r\n% because I know earth scientists use MATLAB after the fact to analyze\r\n% seismic data, but I was less certain what exactly they might do with\r\n% satellite data and earthquakes.  The article, centered on work by Bill\r\n% Barnett from U. of Iowa, is very interesting.  Rather than wait for\r\n% data to be processed well after events occur, Bill demonstrates what can\r\n% be done with the data in a much shorter time period, allowing first\r\n% responders to expedite their decision making regarding where, when, and\r\n% how to respond to damaging events.\r\n%%\r\n% I contacted Bill and verified that he uses MATLAB to perform calculations\r\n% such as how much the earth moved, what kind of earthquake mechanism is in\r\n% play, and how large the active fault dimensions are.  He shares his code\r\n% <http:\/\/myweb.uiowa.edu\/wbarnhart\/programs.html here>. This sort of\r\n% analysis may encourage data providers to make relevant data available as\r\n% quickly as possible so scientists can collaborate with first responders\r\n% as soon as possible.\r\n%%\r\n% Do you have an interesting story to tell with your data?  I bet you do!\r\n% Let us know <https:\/\/blogs.mathworks.com\/loren\/?p=1171#respond here>.\r\n\r\n\r\n##### SOURCE END ##### ab3c2643a18547e989f7890f6eff6f21\r\n-->","protected":false},"excerpt":{"rendered":"<!--introduction--><p>A friend just pointed out to me a really cool article: <a href=\"http:\/\/www.wired.com\/2015\/04\/turns-satellites-work-great-mapping-earthquakes\/\">Turns Out Satellites Work Great for Mapping Earthquakes<\/a>.  It's about mapping earthquakes using satellite data.  This sounded intriguing because I know earth scientists use MATLAB after the fact to analyze seismic data, but I was less certain what exactly they might do with satellite data and earthquakes.  The article, centered on work by Bill Barnett from U. of Iowa, is very interesting.  Rather than wait for data to be processed well after events occur, Bill demonstrates what can be done with the data in a much shorter time period, allowing first responders to expedite their decision making regarding where, when, and how to respond to damaging events.... <a class=\"read-more\" href=\"https:\/\/blogs.mathworks.com\/loren\/2015\/05\/06\/matlab-used-to-map-earthquakes-from-satellite-data\/\">read more >><\/a><\/p>","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[40],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/posts\/1171"}],"collection":[{"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/comments?post=1171"}],"version-history":[{"count":2,"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/posts\/1171\/revisions"}],"predecessor-version":[{"id":1173,"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/posts\/1171\/revisions\/1173"}],"wp:attachment":[{"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/media?parent=1171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/categories?post=1171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/loren\/wp-json\/wp\/v2\/tags?post=1171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}