M72 Raoul Island Region June 15 2019

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M 7.2 - 103km NE of L'Esperance Rock, New Zealand • 2019-06-15 22:55:02 (UTC) 30.805°S 178.095°W 34.4 km depth • PTWC issued a potential tsunami threat warning - which was revoked later on. • Observed waves: • FISHING ROCK RAOUL 29.3S 177.9W 2328 UTC 0.08M/ 0.3FT Duration: 08 min. • RAOUL IS BOAT COVE 29.3S 177.9W 2334 UTC 0.09M/ 0.3FT Duration: 06 min. • (https://www.tsunami.gov/events/PHEB/2...) • Tectonic Summary (by USGS): • The June 15, 2019, M 7.2 Kermadec Islands earthquake occurred as the result of shallow reverse faulting within the Tonga-Kermadec subduction zone, which extends north-northeast from the North Island of New Zealand for more than 2,500 km through Tonga to within 100 km of Samoa. Focal mechanism solutions indicate that rupture occurred on either a north-northeast- or a south-southwest-striking, moderately dipping reverse fault. At the location of the earthquake, the Pacific plate moves westward relative to the Australia plate at a velocity of about 60 mm/yr, subducting to the west beneath the Australia plate at the Tonga and Kermadec Trenches. The eastern edge of the Australia plate may itself be viewed as a collection of microplates whose relative motions help to accommodate the overall Pacific-Australia convergence and associated back-arc spreading. The location and focal mechanism solutions of the earthquake are consistent with it occurring as westward-dipping reverse faulting on or near the interface between the subducting Pacific plate and the overriding Australia plate. • The interaction between the Pacific and Australia plates creates one of the most active tectonic environments in the world, with a high level of associated earthquake activity. Over the preceding half century there have been more than 150 earthquakes of M 6 or larger within 250 km of the June 15, 2019 earthquake. The largest event was a M 7.6 earthquake in July 2011, 220 km to the northeast of today’s earthquake, with no associated casualties or damage. • (USGS: https://earthquake.usgs.gov/earthquak...) • We are a Youtube community devoted to exploring our world in the areas of volcanology and seismic activities from around the planet. • We offer live steaming cameras of a variety of volcanic hot spots as well as live seismic data. Let’s learn more together • • READ BEFORE WATCH: • The data and information shown here is largely provisional and does not serve as an official statement of an authority. • For official statements, please visit the competent authority. The data provided here may not be used for public affairs. • We endeavor to give as much detail as possible, however, we reserve the right to be wrong. • MEDIA SOURCES: • A free and Open Source software to visualize seismic data from the AVO/USGS. • USGS (https://www.usgs.gov/) • IRIS (https://www.iris.edu/hq/) • GFZ (https://www.gfz-potsdam.de/startseite/) • ORFEUS (https://www.orfeus-eu.org/) • Alaska Volcano Observatory AVO (https://avo.alaska.edu/) • SOCIAL: • Discord: / discord • Facebook: / 1446776788789853 • Twitter: / volcanoverse • INFOS: • Reading spectrograms: • https://earthquake.usgs.gov/monitorin... • https://pnsn.org/spectrograms/what-is... • Seismic Waves: • • Earthquake Sends Seismic Waves to one... • Iceland's Volcanos: / @chrislx2006 • Alaska's Volcanos: / @impactsr86

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