Jason R. Patton @earthjay@qoto.org

Greetings tooters!

this account is for Dr. Jason "Jay" R. Patton (aka EarthJay) and I march for science. #hashtag #Introduction #MastodonIntroduction

His main education/outreach effort is voluntarily writing up #EarthquakeReport posts on earthjay.com. These are for #earthquake and #tsunami events of interest, sorted in different ways; sorted by year here: https://earthjay.com/?page_id=3220

they are an engineering geologist (PG license 9758) who serves the public while at the California Geological Survey, Seismic Hazards and Tsunami programs. https://www.conservation.ca.gov/cgs/

he has been studying the tectonics of the Cascadia subduction zone (a convergent plate boundary fault system) for over 25 years (MS thesis at cal poly humboldt, dept geology). he is an adjunct professor at this dept. https://geology.humboldt.edu/

they studied marine sedimentary records (submarine landslide deposits called turbidites) of earthquakes offshore of Sumatra/Cascadia for my marine geology & geophysics PhD at oregon state university. https://ceoas.oregonstate.edu/

capital letters are over rated but chocolate and oxford commas are not.

#EarthquakeReport for #OTD in 1992 M7.2 Cape Mendocino #Earthquake in #Humboldt County #California

take a mythical journey with a student following the earthquake as they made discoveries https://storymaps.arcgis.com/stories/695f0487e6764718bb36ca05d1bb7404

learn from @CalConservation @CAGeoSurvey https://www.conservation.ca.gov/cgs/earthquakes/cape-mendocino

#EarthquakeReport for #OTD in 1992 M7.2 #Earthquake in #HumboldtCounty #California

I was there
triggered 2 M6+ eqs
generated tsunami, led to the National Tsunami Hazard Mitigation Program
landslides and liquefaction

learn more: https://earthjay.com/?p=5233
& https://earthquake.cascadiageo.org/?page_id=130

#EarthquakeReport for #OTD in 2023 M7.2 #Earthquake along the Kermadec subduction zone (convergent plate boundary fault system)

generated modest #Tsunami
felt strongly on Raoul Island MMI 7 intensity!

learn more
https://earthjay.com/?p=11021

#EarthquakeReport for #OTD in 2023 M7.1 #Gempa #Earthquake offshore of #Sumatra #Indonesia

felt widely
@usgs_earthquakes models show high chance for liquefaction and moderate chance for landslides

learn more:
https://earthjay.com/?p=11040

#EarthquakeReport for M6.0 & M6.1 #Earthquake in #Taiwan

3rd and 4th largest aftershocks following 2 April '24 M 7.4
@USGS_Quakes model for M6.0 (onshore) suggests high chance for #Liquefaction

original report here:
https://earthjay.com/?p=11904

#EarthquakeReport for M4.3 #Earthquake in southern #California

Strike-slip earthquake mechanism
Doesn't look like it's associated with a mapped fault

Learn more from 2016 report https://earthjay.com/?p=3758

https://earthquake.usgs.gov/earthquakes/eventpage/ci40549375/executive

#EarthquakeReport for #OTD in 1906 M7.8 #Earthquake in #California

right-lateral strike-slip earthquake on the San Andreas fault
generated modest #Tsunami in #SanFrancisco Bay

learn more here:
https://earthjay.com/?p=8428

#EarthquakeReport for M4.8 #Earthquake on the east coast of the USA

Oblique reverse (compressional) earthquake mechanism
Felt widely

Learn more abt the difference between east coast & west coast earthquakes here: https://earthjay.com/?p=5970

https://earthquake.usgs.gov/earthquakes/eventpage/us7000ma74/executive

#EarthquakeReport for the M7.4 #Earthquake in #Taiwan

updated poster and tide gage plot
also intensity and ground failure interpretive figures

learn more here: https://earthjay.com/?p=11904

#EarthquakeReport for M 7.4 #Earthquake in #Taiwan

reverse mechanism
possibly slip on an east dipping fault (?)
strong ground shaking felt widely
landslides & liquefaction
modest local #Tsunami

updated poster & report here: https://earthjay.com/?p=11904

#EarthquakeReport for M7.4 & M6.5 #Earthquake in #Taiwan

sadly people are injured and worse

Reverse (Compressional) mechanism
Strong ground shaking
Interpretive Poster

Learn about regional tectonics from 2022 report: https://earthjay.com/?p=10450

https://earthquake.usgs.gov/earthquakes/eventpage/at00sbcakx/executive

#EarthquakeReport for M7.4 #Earthquake in #Taiwan

small sized #Tsunami recorded at Ishigakajima to the east of Taiwan

Learn about regional tectonics from 2022 report: https://earthjay.com/?p=10450

https://earthquake.usgs.gov/earthquakes/eventpage/at00sbcakx/executive

#EarthquakeReport for M7.4 & M6.5 #Earthquake in #Taiwan

Major aftershock is shallower and maybe more damaging (?) based on @USGS_Quakes PAGER alert

Learn about regional tectonics from 2022 report:
https://earthjay.com/?p=10450
7.4
https://earthquake.usgs.gov/earthquakes/eventpage/at00sbcakx/executive
6.5
https://earthquake.usgs.gov/earthquakes/eventpage/us7000m9gc/executive

#EarthquakeReport for M7.4 #Earthquake in #Taiwan

Reverse (Compressional) mechanism
Strong ground shaking

Learn about regional tectonics from 2022 report:
https://earthjay.com/?p=10450

https://earthquake.usgs.gov/earthquakes/eventpage/at00sbcakx/executive

#EarthquakeReport for #OTD in 2017 M 6.6 #Earthquake offshore of #Kamchatka

reverse (compressional) earthquake mechanism
north of Pacific plate slab (?) so interesting earthquake in complicated tectonic region

learn more: https://earthjay.com/?p=5200

#EarthquakeReport for #OTD in 2017 M5.7 #Sismo #Terremoto #Earthquake in the #GulfOfCalifornia #MarDeCortés offshore of #Mexico

right-lateral strike-slip (moving side-by-side) earthquake
overlapping fracture zones & spreading ridges

learn more about the https://earthjay.com/?p=5210

#EarthquakeReport for $OTD in 1964 M9.2 #Earthquake in #Alaska

2nd largest eq recorded on modern instruments
generated coseismic (during the earthquake) vertical land motion
triggered a transpacific #Tsunami

read more https://earthjay.com/?p=3833

#EarthquakeReport for M6.4 #Earthquake near #Vanuatu #Fiji

Strike-slip (right-lateral?) related to transform fault (?) along the Central Spreading Ridge in North Fiji Basin

Read 2017 report for tectonic background https://earthjay.com/?p=4761

https://earthquake.usgs.gov/earthquakes/eventpage/us7000m86i/executive

#EarthquakeReport for #OTD in 2019 M 5.0 #Earthquake in #Alaska

normal (extensional) oblique (strike-slip) earthquake mechanism
interesting location with historical analogue (1958 M 7.1)

learn more: https://earthjay.com/?p=8403