As the Nazca plate subducts, it dips below the South America plate at different dip angles. In this region of Peru, the dip angle is shallow and we term this flat-slab subduction.<\/p>\n
This M 7.5 earthquake occurred in the downgoing Nazca plate, so was not a subduction zone megathrust event, but a “slab” event (for being in the Nazca slab).<\/p>\n
I prepared a much more extensive report for a M 8.0 earthquake in a nearby location that happened on 26 May 2019. Read more about the tectonics of this region in that report here<\/a>.<\/p>\n Was this M 7.5 an aftershock of the M 8.0? Probably not, based on the USGS M 8.0 slip model. However this M 7.5 could have been triggered by changes in static coulomb stress following the M 8.0.<\/p>\n I don\u2019t always have the time to write a proper Earthquake Report. However, I prepare interpretive posters for these events.<\/p>\n Because of this, I present Earthquake Report Lite. (but it is more than just water, like the adult beverage that claims otherwise). I will try to describe the figures included in the poster, but sometimes I will simply post the poster here.<\/p>\nBelow is my interpretive poster for this earthquake<\/font><\/h2>\n
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I include some inset figures. <\/font><\/h3>\n
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\n![\"\"](\"http:\/\/earthjay.com\/earthquakes\/20211128_peru\/20211128_peru_interpretation.jpg\")
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Chile | South America<\/font><\/strong><\/h2>\n
General Overview<\/h3>\n
Earthquake Reports<\/h3>\n
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Social Media<\/font><\/strong><\/h2>\n<\/ul>\n
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References:<\/font><\/strong><\/h2>\n
Basic & General References<\/h3>\n
Specific References<\/h3>\n
Return to the Earthquake Reports page<\/a>.<\/font><\/strong><\/h2>\n