<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,<div><br></div><div>The method used to interpolate ground motions to generate ShakeMaps has changed over the past year or so. The new method is described in an upcoming issue of BSSA. We expect the articleto appear in the December 2010 issue, which should be out any day now. The title is "A Revised Interpolation Scheme for ShakeMap." </div><div><br></div><div>In the meantime, the original reference for ShakeMap is Wald et al., "TriNet 'ShakeMaps': Rapid Generation of Peak Ground Motion and Intensity Maps for Earthquakes in Southern California", Earthquake Spectra, Volume 15, No. 3, August 1999.</div><div><br></div><div>There have been some additional references since then, but that paper describes the basic methodology of the original system. You may also be interested in:</div><div><br></div><div><div>Wald, D.J., Worden, B.C., Quitoriano, Vincent, and Pankow, K.L., 2005, ShakeMap manual: technical manual, user¡¯s guide, and software guide: U.S. Geological Survey Techniques and Methods, book 12, section A, chap. 1, 132 p. </div><div><br></div><div>It is available at: <a href="http://pubs.usgs.gov/tm/2005/12A01/">http://pubs.usgs.gov/tm/2005/12A01/</a> </div><div><br></div><div>It is a bit out of date at this point, but still contains a lot of useful information not found in the software guide.</div><div><br></div><div>Bruce</div><div><br></div><div><br></div></div><div><div><div>On Nov 30, 2010, at 9:35 PM, ³É wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi,</div> <div>I want to know the process sequence of grind,like how we get the final PGA/PGV or Intensities from the data I give it in the *_dat.xml files. I just want to know the main steps in the procedure,such as PGA/PGAV(observations)-->??--??--??-->final PGA/PGV (or Intensity).</div> <div>In the ShakeMap Manual,we first create a coarse grid in 30m,then interplote in 1.5km more or less then we obtain the final PGA(intensity) after a few steps.Now in ShakeMap V3.5,how should we do?</div> <div>Does anyone have the documents about the procedure or sth like ShakeMap Manual except the releasenotes in the distribution? </div> <div> </div> <div>Thanks,</div> <div>WSC </div> <div> </div> <div><sign signid="0">------------------</sign></div> <div> <div style="FONT-FAMILY: Verdana; COLOR: #000; FONT-SIZE: 14px">send from <a href="mailto:gilliant@qq.com">gilliant@qq.com</a><br></div></div> <div> </div>_______________________________________________<br>Shake-dev mailing list<br><a href="mailto:Shake-dev@geohazards.usgs.gov">Shake-dev@geohazards.usgs.gov</a><br>https://geohazards.usgs.gov/mailman/listinfo/shake-dev<br></blockquote></div><br></div></body></html>