Pinned toot

Greetings tooters!

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

His main education/outreach effort is voluntarily writing up posts on earthjay.com. These are for and events of interest, sorted in different ways; sorted by year here: 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. 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. 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. ceoas.oregonstate.edu/

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

for $OTD in 1964 M9.2 in

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

read more earthjay.com/?p=3833

for in 2019 M 5.0 in

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

learn more: earthjay.com/?p=8403

for M 6.9 in

oblique-normal (extensional and strike-slip)
strong shaking
chances for landslides and liquefaction

report with interpretive posters: earthjay.com/?p=11869

for M 6.9 in

earthquake.usgs.gov/earthquake

oblique normal (strike-slip with component of extension) near (though shallower) the location of M 7.0 on 2 April 2023

interpretive poster

2023 report here: earthjay.com/?p=10964

Friends of the Pleistocene: 2024 Pacific Northwest Cell

Ice and Fire: The Glacier and Eruptive History of the Oregon Cascades

Dylan Rood, Anders Carlson, Hal Wershow, Javaria Aziz, Doug Clark, Daniele Mckay provide some basic trip details:

fop.cascadiageo.org/field-trip

for in 2020 M 5.7 in

felt widely
normal (extensional) mechanism
associated with the Wasatch fault
@USGS_Quakes model suggests chance for liquefaction

learn more: earthjay.com/?p=9401

for in 2023 M 7.0 along the trench

outer rise normal (extensional) earthquake (not on subduction zone megathrust fault)
generated tsunami

learn more: earthjay.com/?p=10902

for in 2011 M 9.1 offshore of

megathrust subduction zone earthquake
generated transpacific
triggered landslides & induced liquefaction
strong shaking felt widely

learn interactively here: earthjay.com/?p=9773

for in 2017 M 6.3 in

reverse/thrust (compressional) earthquake mechanism
possibly (?) on megathrust subduction zone fault

learn more: earthjay.com/?p=5142

for in 2021 M7.3/7.4/8.1 along Kermadec trench

each earthquake generated as evidenced by tide gage data

learn more earthjay.com/?p=9955

for M6.7 offshore of

Possibly right-lateral strike-slip mechanism (?)
Analogy earthquake in 1987

Learn more from 2016 report:
earthjay.com/?p=3736

earthquake.usgs.gov/earthquake

Red circle = epicenter

for in 2010 M 8.8 offshore of

megathrust subduction zone earthquake
generated trans-Pacific
@USGS_Quakes models show chance for landslides/liquefaction

learn more earthjay.com/?p=5111

for in 2018 M 7.5 in

reverse (compressional) earthquake mechanism
associated (?) with Papuan Fold and Thrust Belt (PFTB)

learn more
earthjay.com/?p=7157
update
earthjay.com/?p=7193

for in 2022 M 6.1 in

right-lateral strike-slip earthquake
associated w/Sumatra fault
high intensity shaking felt widely
@USGS_Quakes models show probable landslide/liquefaction

learn more:
earthjay.com/?p=10146

for in 2021 M 7.7 offshore of the

thrust (compressional) earthquake mechanism
possibly on megathrust subduction zone fault
generated small

See poster here:
earthjay.com/?p=9988

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