Item talk:Q268846

{

 "USGS Publications Warehouse": {
   "@context": "https://schema.org",
   "@type": "Article",
   "additionalType": "Journal Article",
   "name": "Constraints on the long-period moment-dip tradeoff for the Tohoku earthquake",
   "identifier": [
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse IndexID",
       "value": "70036145",
       "url": "https://pubs.usgs.gov/publication/70036145"
     },
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse Internal ID",
       "value": 70036145
     },
     {
       "@type": "PropertyValue",
       "propertyID": "DOI",
       "value": "10.1029/2011GL049129",
       "url": "https://doi.org/10.1029/2011GL049129"
     },
     {
       "@type": "PropertyValue",
       "propertyID": "ISSN",
       "value": "00948276"
     }
   ],
   "journal": {
     "@type": "Periodical",
     "name": "Geophysical Research Letters",
     "volumeNumber": "38",
     "issueNumber": "20"
   },
   "inLanguage": "en",
   "isPartOf": [
     {
       "@type": "CreativeWorkSeries",
       "name": "Geophysical Research Letters"
     }
   ],
   "datePublished": "2011",
   "dateModified": "2021-01-27",
   "abstract": "Since the work of Kanamori and Given (1981), it has been recognized that shallow, pure dip\u2010slip earthquakes excite long\u2010period surface waves such that it is difficult to independently constrain the moment (M0) and the dip (\u03b4) of the source mechanism, with only the product\u00a0M0\u00a0sin(2\u03b4) being well constrained. Because of this, it is often assumed that the primary discrepancies between the moments of shallow, thrust earthquakes are due to this moment\u2010dip tradeoff. In this work, we quantify how severe this moment\u2010dip tradeoff is depending on the depth of the earthquake, the station distribution, the closeness of the mechanism to pure dip\u2010slip, and the quality of the data. We find that both long\u2010period Rayleigh and Love wave modes have moment\u2010dip resolving power even for shallow events, especially when stations are close to certain azimuths with respect to mechanism strike and when source depth is well determined. We apply these results to USGS W phase inversions of the recent M9.0 Tohoku, Japan earthquake and estimate the likely uncertainties in dip and moment associated with the moment\u2010 dip tradeoff. After discussing some of the important sources of moment and dip error, we suggest two methods for potentially improving this uncertainty.",
   "description": "L00G17, 6 p.",
   "publisher": {
     "@type": "Organization",
     "name": "American Geophysical Union"
   },
   "author": [
     {
       "@type": "Person",
       "name": "Tsai, V.C.",
       "givenName": "V.C.",
       "familyName": "Tsai"
     },
     {
       "@type": "Person",
       "name": "Hayes, Gavin P. ghayes@usgs.gov",
       "givenName": "Gavin P.",
       "familyName": "Hayes",
       "email": "ghayes@usgs.gov",
       "identifier": {
         "@type": "PropertyValue",
         "propertyID": "ORCID",
         "value": "0000-0003-3323-0112",
         "url": "https://orcid.org/0000-0003-3323-0112"
       },
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Geologic Hazards Science Center",
           "url": "https://www.usgs.gov/centers/geologic-hazards-science-center"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Duputel, Z.",
       "givenName": "Z.",
       "familyName": "Duputel"
     }
   ]
 }

}