Jason R. Patton @earthjay@qoto.org

#EarthquakeReport for M 6.0 #Earthquake offshore of #Oregon

right-lateral strike-slip earthquake mechanism
along the Blanco transform fault, plate boundary between the Pacific and Juan de Fuca plates

tectonic background in '19 report https://earthjay.com/?p=8935

#EarthquakeReport for M 4.4 #Earthquake in #Petrolia #California

right-lateral (?) strike-slip fault earthquake sequence
in region of 1991 Honeydew Earthquake

report here: https://earthjay.com/?p=12091

#EarthquakeReport for M4.4 #Earthquake in #Petrolia #California

right-lateral strike-slip earthquake
associated with 1991 Honeydew earthquake (?)
interpretive poster
report forthcoming

https://earthquake.usgs.gov/earthquakes/eventpage/nc75077996/executive

more in 2021 report: https://earthjay.com/?p=10125

upon a night of reflection (getting over a cold so not thinking clearly) and the relocations, these appear to NOT be on the Mendocino fault. but probably along a north-south oriented right-lateral strike-slip fault in the North America plate.

#EarthquakeReport for M 4.4 #Earthquake near #Petrolia #California #USA

5 earthquakes M 3.6, 4.1, 4.4, 4.1, 2.6
right-lateral strike-slip earthquake mechanism
likely along subducted Mendocino fault beneath North America

tectonic background in '21 report https://earthjay.com/?p=10125

#EarthquakeReport for M 6.5 #Earthquake offshore of #HaidaGwaii #Canada

Strike-slip earthquake mechanism
Felt onshore shaking intensity MMI 5

Tectonic setting in '18 report https://earthjay.com/?p=7888

https://earthquake.usgs.gov/earthquakes/eventpage/us7000ne51/executive

#EarthquakeReport for M4.7 #Earthquake near #Malibu southern #California

left-lateral (?) strike-slip earthquake mechanism
widely felt with reported shaking intensity MMI 5 (so far)

https://earthquake.usgs.gov/earthquakes/eventpage/ci40731623/executive

tectonic background in 2018 report https://earthjay.com/?p=7311

#EarthquakeReport for M7.0 #Earthquake offshore of #Kamchatka #Russia

@USGS_Quakes models show chance for triggered landslides and induced liquefaction
comparison between modeled shaking intensity and observations of intensity

report here:
https://earthjay.com/?p=12053

#EarthquakeReport for the M7.1 #Earthquake and #Tsunami offshore of #Kyushu #Japan

compressional earthquake mechanism
interface earthquake along the megathrust subduction zone fault
generated local tsunami
Japan issued megaquake advisory

read report here https://earthjay.com/?p=12016

#EarthquakeReport #TsunamiReport for M 7.1 #Earthquake offshore of #Japan

megathrust subduction zone earthquake

generated local #Tsunami up to about 40 cm in amplitude

these are three tide gage plots

https://earthquake.usgs.gov/earthquakes/eventpage/us6000nith/executive

#EarthquakeReport for M 5.2 #Earthquake south of #Bakersfield #California

reverse/thrust mechanism (compressional earthquake)
high acceleration (31% g recorded ~8km to the south of the epicenter)

https://earthquake.usgs.gov/earthquakes/eventpage/ci40865184/moment-tensor

tectonic setting in 2016 report https://earthjay.com/?p=3758

#EarthquakeReport for the 11 July '23 M 7.1 and 2 August '24 M 6.8 #Lindol and #Earthquake

M 7.1: extensional (normal) mechanism, deep, intraplate (slab)
M 6.8: compressional (reverse) mechanism, not deep, interface or intraplate (crustal)

report here:https://earthjay.com/?p=11987

#EarthquakeReport for M 6.8 #Gempa #Earthquake offshore of #Mindanao #Philippines

reverse mechanism (compressional) related to the subduction zone (convergent plate boundary)

https://earthquake.usgs.gov/earthquakes/eventpage/us6000nhqc/executive

read more in report from the mainshock: https://earthjay.com/?p=11611

#EarthquakeReport for M6.8 #Gempa #Earthquake in the #Philippines

mechanism & depth suggest to be on megathrust subduction zone (?)

@USGS_Quakes

model suggests chance for #Liquefaction

https://earthquake.usgs.gov/earthquakes/eventpage/us6000nhqc/executive

in region of M 7.6 in December '23: https://earthjay.com/?p=11611

#EarthquakeReport for M6.8 #Gempa #Earthquake in the #Philippines

mechanism & depth suggest to be on megathrust subduction zone (?)
possible local #Tsunami (?)

https://earthquake.usgs.gov/earthquakes/eventpage/us6000nhqc/executive

in region of M 7.6 in December '23: https://earthjay.com/?p=11611

#EarthquakeReport for M 4.9 #Earthquake near #Barstow southern #California

Upon further reflection, appears to be left-lateral earthquake sequence
possibly related to the Manix fault (?)

report here: https://earthjay.com/?p=11968

#EarthquakeReport for the M 4.9 #Earthquake east of #Barstow southern #California

looks like a right-lateral strike-slip earthquake mechanism (near the Calico fault)

https://earthquake.usgs.gov/earthquakes/eventpage/ci40675215/executive

learn about the tectonics of southern California in '20 report https://earthjay.com/?p=9580

#EarthquakeReport for M6.2 #Sismo #Terremoto #Earthquake en #Guatemala

Intermediate depth

Tectonic background in 2019 report from analogous event
https://earthjay.com/?p=8307

https://earthquake.usgs.gov/earthquakes/eventpage/us7000n0ka/executive

#EarthquakeReport for M7.4 #Sismo #Terremoto #Earthquake en #Chile y #Bolivia

intermediate depth
normal (extensional) mechanism
within subducted Nazca plate (slab event)

report: https://earthjay.com/?p=11955