Discover and read the best of Twitter Threads about #seismic

Most recents (3)

New #OpenAccess paper in @SeismoSocietyAm "The Seismic Record": The 27 February 2022 Lop Nor Earthquake: Detectability, Location, and Discrimination. How forensic #seismology can demonstrate that a seismic disturbance near a #nuclear test-site is natural. doi.org/10.1785/032022…
I wish to thank my co-authors, Esteban J Chaves and Mark Fisk, for their amazing help, cooperation, and enthusiasm! The paper is quite compact as the journal's philosophy demands, but here is a little TL-DR for anybody who is curious about forensic seismology.
On 27 February 2022, a magnitude 4.8 #seismic event took place near the northern part of the Chinese Lop Nor #nuclear test site. Forensic #seismology has to identify the source of such seismic disturbances. #LopNor #forensicseismology #nucleartesting
Read 20 tweets
Why do strong Earthquakes take place in Haiti? Does it have something to do with Plate Tectonics?
What are the factors that put Haiti at risk?
Learn more in this thread on today’s #GeoAgenda with our collab w/@Daniela_A_Gallo ! 1/n
A magnitude 7.2 (M 7.2) #earthquake struck #Haiti on August 14- west of the capital city, #PortAuPrince, and 50km west of the magnitude 7.0 devastating EQ that took place in 2010 which killed ~100,000 people and devastated the Island. 2/n
Both EQ;s were produced in the #EnriquilloPlantain fault zone, a complex boundary between two #tectonicplates. To the north there is another tectonic boundary, and this makes the Hispaniola island to be sandwiched in between a complex geological terrain 3/n
Read 10 tweets
One of the best seismically stable hydropower project was #TarbelaDam. Bcoz due to the pressure of water & sediment load the active tectonics got suppressed. Before constructing any mega #hydropower project, pre seismic zoning mst be ensured. Rawal Dam lies above active fault 1/2
Because #WAPDA didn't bother to conduct the pre #seismic zoning and even the post Dam assessment report doesnot address the active tectonics of the capital city! The authorities still living in denial that there is no active zone in the capital city!
#KoynaDam incident was such a case where no seismic zoning was performed & an #earthquake resulted in a #Dam break with a devastating impact and casualties. Dam construction can either trigger a fault or suppress it. Local geological settings must be assessed thoroughly.
Read 4 tweets

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