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dc.contributor.authorShiddiqi, Hasbi Ash
dc.contributor.authorTun, Pa Pa
dc.contributor.authorOttemöller, Lars
dc.date.accessioned2021-04-20T07:43:58Z
dc.date.available2021-04-20T07:43:58Z
dc.date.created2020-03-03T16:50:02Z
dc.date.issued2019
dc.PublishedSeismological Research Letters. 2019, 90 (5), 1923-1936.
dc.identifier.issn0895-0695
dc.identifier.urihttps://hdl.handle.net/11250/2738491
dc.description.abstractEarthquake monitoring in Myanmar has improved in recent years because of an increased number of seismic stations. This provides a good quality dataset to derive a minimum 1D velocity model and local magnitude (⁠ML⁠) scale for the Myanmar region, which will improve the earthquake location and magnitude estimates in this region. We combined and reprocessed earthquake catalogs from the Department of Meteorology and Hydrology of Myanmar and the International Seismological Centre. Additional waveform data from various sources were processed as well. A total of 419 earthquakes were selected based on azimuthal gap, minimum number of stations, and root mean square travel‐time residuals. A set of initial seismic velocity models was derived from various seismic velocity models. These models were randomly perturbed and used as initial models in a coupled hypocenter and 1D seismic velocity inversion procedure. We compared the average mean travel‐time residuals from the initial and inverted models. The best final model showed an improvement of location standard errors compared to the old model. Furthermore, the local magnitude scale inversion for the Myanmar region was performed using 194 earthquakes having a minimum of two amplitude observations. The following ML scale was obtained ML=logA(nm)+1.485×logR(km)+0.00118×R(km)−2.77+S. This scale is valid for hypocentral distance up to 1000 km and magnitudes up to ML 6.2.en_US
dc.language.isoengen_US
dc.publisherSeismological Society of Americaen_US
dc.titleMinimum 1D velocity model and local magnitude scale for Myanmaren_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionacceptedVersionen_US
dc.rights.holderCopyright Seismological Society of America.en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.fulltextpostprint
cristin.qualitycode1
dc.identifier.doi10.1785/0220190065
dc.identifier.cristin1799428
dc.source.journalSeismological Research Lettersen_US
dc.source.4090
dc.source.145
dc.source.pagenumber1923-1936en_US
dc.identifier.citationSeismological Research Letters. 2019, 90 (5), 1923–1936.en_US
dc.source.volume90en_US
dc.source.issue5en_US


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