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@USGS
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Alaska is warming 2x fast from
#climatechange
as the rest of the US. Hello,
#drought
& fire
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Dome fountain of episode 10, October 10–13, 1969, eruption of Kilauea Volcano. This dome fountain is about 20 m (65 ft) high. Symmetrical dome fountains such as this are rare.
#Tbt
#HI
@Volcanoes_NPS
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Forty-one years ago, Mount St. Helens cataclysmically erupted. The May 18, 1980, eruption and its effects were heavily photographed from numerous vantage points, but click here: to view rarely seen archival footage of the rising ash column.
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Reminder: Monday, January 18th - entrance to all National Parks is free in honor of Martin Luther King Jr. Day
#savethedate
#GetOutside
#MLKDay2021
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Big news: USGS scientists & partners have confirmed, with 2 new lines of evidence, that human footprints found in White Sands Nat'l Park show that people lived in North America 21-23,000 yrs ago—much earlier than previously thought!
More here:
Imgs: NPS
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In Puerto Rico, earthquakes are more active than normal. These earthquakes, also called aftershocks, are occurring near the mainshock and are part of what we call a sequence. 1/5
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Today marks the 30th anniversary of the Northridge earthquake, which jolted the greater LA area awake at 4:31am on 17 January 1994. Read about the tools we have gained since then:
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If you felt the 5.1 Sparta, NC earthquake then be sure to submit a “Did You Feel It” report. Keep up to date on any changes at:
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More on the M 6.5 earthquake - 72km W of Challis, Idaho that just occurred here: Please let us know what you felt here:
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A new Hawaiian Island is forming! The Lō‘ihi Seamount is taking shape beneath the Pacific Ocean. Although it's exciting to watch an island form, it’s still too early to make travel reservations—it won’t peek from the ocean surface for another 10,000–100,000 yrs.
#OceanMonth2020
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This photo was taken on 178 SW of Trona. The road is now closed for repairs.
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New aftershock scenario forecast indicates 84% chance that no more large earthquakes (>M 6.0) will occur in Puerto Rico over next 30-days. Moderate (M 5.0+) and light shaking (M 3.0+) still likely. Read more in our Top Story:
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This video shows earthquake events a few hours before the M6.4 on July 4th, 2019 to present (as of above noon on July 8th, 2019).
#earthquake
#usgs
#californiaearthquake
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The M 7.9 occurred as the result of strike slip faulting. At it's location, the Pacific plate is converging with the North America plate.
Over the preceding century, 11 other M7+ earthquakes have occurred within 600 km of today's earthquake.
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🎇Happy
#4thofJuly
!🎇 As you safely and responsibly enjoy the
#fireworks
🎆 today, check out the
#minerals
that give them their gorgeous colors.
#DYK
that those minerals have other uses in our lives? Some of them are even
#criticalminerals
:
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A magnitude 7.8 earthquake struck New Zealand on November 13, 2016 at 11:02:56 UTC.
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Good morning Buffalo! More on this morning's M3.8 earthquake here: . Please let us know what you felt here:
#WestSeneca
#NY
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The USGS Library is commemorating the 40th anniversary of the 1980 eruption of Mount St. Helens with a special online exhibit.
The exhibit features images, reports, personnel interviews, and more:
#40YearsAgo
#MSH40
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M 5.1 - 10km ENE of Dover, Delaware Don't forget to send the USGS a "Did You Feel It!" report
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A M7.7 earthquake has occurred 125km NNW of Lucea, Jamaica A link to the Did You Feel It Form can be found here:
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Happy Birthday to Black Canyon of the Gunnison National Park, CO (NM designated on 3/2/1933).
Photo: National Park Service
#FindYourPark
#colorado
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Watermelon tourmaline, a form of the boron silicate mineral that bears a striking resemblance to the perennial summer treat.
#NationalWatermelonDay
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Happy 92nd birthday to
#Arches
National Park! First established as a
#nationalmonument
in 1929, it was later designated a
#nationalpark
in 1971. Help us celebrate by sharing your pics of this national treasure.
@ArchesNPS
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On May 18, 1980, Mount St. Helens unleashed the most devastating eruption in U.S. history. To learn how the eruption changed the future of volcanology, click here:
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May 18 is the anniversary of the 1980 Mount St. Helens eruption that changed how we view volcanoes. Read more about the ways Mount St. Helens changed our world.
@GPNF
@MSHInstitute
#VolcanoAwarenessMonth
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Alerts were sent for a M6.8 in California. This was an error. More information to come.
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It's our
#birthday
! Today we're 138 yrs old. Little known is this musical gem—USGS Centennial March from our 100yr b-day. Thx
@usnavyband
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It's
#MagmaMonday
- This image captures the last high fountain of the 1969-1974 Maunaulu eruption of
#K
īlauea Volcano, Hawai‘i. More images here:
#volcanoes
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Today is
#InternationalWomensDay
. So, what do
@USGS
women scientists do?
Everything!
#WomeninScience
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#OnThisDay
in 1980, M5.1
#EQ
shakes Mount St. Helens. The northern flank of the volcano slides away in massive landslide (largest in recorded history), followed by a lateral blast traveling 300 mph. Forest within 6+ miles of the blast is leveled
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Bats don't always appreciate being handled for research, but after examination they often appreciate the warmth and need a little push to go. This Western red bat was captured during USGS research to learn about their ecology, distribution, and movement patterns.
#BatWeek
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#USGS
#earthquake
experts are in
#PuertoRico
installing temporary seismometers to help track seismic events including a Jan. 7 magnitude 6.4 quake and to improve
#aftershock
forecasts. The instruments supplement a permanent Puerto Rico Seismic Network.
@fema
@redsismica
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USGS Earthquake Science Center Mobile Laser Scanning truck scanning the surface rupture near the zone of maximum surface displacement of the M7.1 Searles Valley earthquake.
Photo credit: Ben Brooks, Todd Ericksen USGS-ESC
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The magnitude 5.9 quake in
#PuertoRico
this morning caused our 7-day aftershock forecast to change. We now estimate an increased probability of 12% for an aftershock of M6.0 or greater. Keep up-to-date at:
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Devils Postpile National Monument was established
#onthisday
in 1911. These spectacular formations were created by slow-cooling, uniform lava flows. More here:
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Paleowetlands: Dry as a bone now, but 13,000 years ago, this area in SE Arizona was the site of a shallow marsh teeming with megafauna. The black mat (just above the chalky white bed in middle) indicates an abrupt change in climate conditions
#Geology101
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#OnThisDay
in 1980 - Mount St. Helens erupted. Learn more about Mount St. Helens in these helpful reference links:
Geology & History:
Fact Sheet 2020-3031:
Feature Story (2020):
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Did you feel the quake this afternoon in the SF Bay Area? Let us know here
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Interested in Plate Tectonics? This Dynamic Earth is a must-read (available online)!
#earthquakes
#volcanoes
#naturalhazards
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Alaska's magnitude 7.9 earthquake rattled Earth's plumbing 3,800 miles away in Florida, where water levels in 2 wells spiked within minutes. How can this happen? Find out at
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1st woman geologist hired at USGS (1896), Florence Bascom established geology dept at Bryn Mawr College (1901)
#WomenInScience
#IWD2018
#WomensHistoryMonth
#Tbt
#history
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The correct answer to our twitter poll question (with 21% of the votes) is 169 - There are 169 potentially active volcanoes in the United States. Thanks for playing! Pic: Mount Shasta 🌋
#magmamonday
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Just released: Earth As Art 5 - Our latest collection of awe-inspiring views of the Earth. Download for free here:
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2024 began with a major
#earthquake
in Japan, could a similar thing happen here? Our updated National Seismic Hazard Model shows what parts of the U.S. could experience damaging earthquakes. What’s the
#earthquake
hazard where you live?
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Happy 158th birthday, Richard Oldham, discoverer of Earth's core from 1897 great earthquake "shadow zone".
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Mesa Verde National Park, which was was created on June 29, 1906, is a beautiful example of how geology affects landscapes and people. Explore the geology and ecology of Mesa Verde at:
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Slickensides are polished, grooved rock surfaces caused by one rock mass moving across another on a fault. Photo: Wasatch fault scarp, Utah. Lance the good boy for scale 🐕
#Geology101
#geology
⛏️
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Since many students are home, check out the new
USGS Learning from Home Webpage. Your first stop for learning resources from USGS! Browse by grade level for fun and educational activities.
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Witness history unfold through the lens of the volcanologist Don Swanson during the eruption of
#MountStHelens
on May 18, 1980. Shot with his Bell & Howell 16mm film camera, Don's raw footage offers an unparalleled glimpse into this monumental event.
#MSH
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Any history buffs out there? Browse our entire collection of historic maps (going back to the late 1800's) here:
#MappingMonday
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This image captures the last high fountain of the 1969-1974 Mauna Ulu eruption of Kīlauea Volcano, Hawai‘i. More incredible images here:
#MagmaMonday
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While Hurricane Michael's winds and storm surge were devastating, the rains also left their mark, triggering flash floods and high waters all along the storm track.
#TurnAroundDontDrown
#HurricaneMichael
#flooding
#waterdata
#dataviz
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Did You Feel the M5.3 EQ that just took place off the Channel Islands, CA? Please let us know here:
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Happy 121st Birthday to Crater Lake National Park! 🎂
Occupying a caldera formed 7,700 years ago by the collapse of Mount Mazama, Crater Lake is the deepest lake in the U.S.
@CraterLakeNPS
#volcanoes
#NaturalHazards
#oregon
#FindYourPark
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Since the size of volcanic eruptions can’t be determined by instruments, the Volcanic Explosivity Index or VEI is used to express the size of explosive volcanic eruptions. Learn about the VEI in this week’s edition of Caldera Chronicles:
#Volcanoes
🌋
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THREAD: Major (Mw 7.1) quake occurred 17 km NNE of Ridgecrest, CA on China Lake Naval Air Center at 8:19pm local time, July 5, 2019. Closest large pop. center is Ridgecrest with pop. of 28k people. This is continuation of sequence that started w/Mw 6.4 approx. 36 hrs beforehand
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Born on this day, 13 May 1888, Inge Lehmann. Discovered Earth had inner and outer cores.
#WomenInScience
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This image captures the last high fountain of the 1969-1974 Mauna Ulu eruption of Kīlauea Volcano, Hawai‘i. More images here:
#MagmaMonday
#history
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Ever wonder what the seafloor looks like under San Francisco Bay? Take a look!
Download a free copy of the poster
or order a paper copy from our USGS Store
#MappingMonday
#bathymetry
#SanFrancisco
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At 5:12am on April 18, 1906, a massive
#earthquake
shook San Francisco, CA. The earthquake ignited several fires that burned for three days and destroyed nearly 500 city blocks.
Today we commemorate 118 years of
#seismic
discovery, research, and resilience.
@USGS_Quakes
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#Onthisday
in 1906 - Devils Tower was declared America's first National Monument by President Theodore Roosevelt.
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Take-out containers piling up? Here's a distance learning activity which helps students learn about contour lines by constructing a 3D topographic map: How to Make a Topo Salad-tray Model
#teacherhack
#education
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Happy Birthday to Florence Bascom! (July 14, 1862) The Ph.D. geologist was the first women hired by the USGS.
#OTD
#womeninscience
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Born this day 1883: Karl Terzaghi, father of soil mechanics. His equations are used in
#landslide
research:
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Molten lava can cool quickly as glass particles called Pele's tears, named after the Hawaiian goddess of volcanoes. This one was found in Jan 2016 on the rim of Halema‘uma‘u Crater, Kīlauea.
#MagmaMonday
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M7.1 earthquake south of Mexico City occurred within the subducting Cocos slab.
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Happy Birthday Rocky Mountain National Park (1/26/1915). Check out the Geology and Ecology of Rocky Mountain National Park
#FindYourPark
#OTD
#Colorado
Photo Credit National Park Service
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Today’s
#saltonsea
#earthquake
swarm in CA raises the probability of larger earthquakes in the
#sanandreas
region. Medium-sized earthquakes can cause damage too; visit our aftershock forecast for more info and Drop, Cover and Hold on if you feel shaking.
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Regarding the 5.1 near Sparta, NC (3.7 km depth) and the next 1 week forecast:
- M3+ is 57% chance (as few as 0, as many as 57 if sequence is re-invigorated by a larger aftershock)
- M5+ is 5% chance
More info:
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Sweet manatees stopping by to wish you a good morning!
#ManateeAppreciationDay
#WildlifeWednesday
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Crater Lake National Park in Oregon was established
#OnThisDay
in 1902. Occupying a caldera formed 7700 years ago by the collapse of Mt. Mazama, Crater Lake is the deepest lake in the United States and one of the most spectacular.
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Friday’s
#Geology101
: Textbook example of an anticline (left "arch") and syncline (right "bowl") in the same formation.
Credit: Barbara Ende
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Similar to the first version we posted, here’s a cleaner view with the blue dots representing the 6.4 event and aftershocks and the red dots representing the 7.1 and aftershocks.
#CaliforniaEarthquake
#earthquakes
#usgs
#science
This video shows earthquake events a few hours before the M6.4 on July 4th, 2019 to present (as of above noon on July 8th, 2019).
#earthquake
#usgs
#californiaearthquake
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Happy Birthday to us!! 🎂🎂Yesterday, the USGS turned 140 years young. Here is a copy of the law est. the USGS in 1879. More history here:
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A RED/WARNING has been issued for
#Shishaldin
Volcano in the Aleutian Arc. An explosive eruption is underway with an ash cloud up to 30,000 ft (9km) above sea level. Learn more about Shishaldin and other volcanoes in Alaska:
@alaska_avo
@USGSVolcanoes
🌋
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The second earthquake in the New Madrid
#earthquake
sequence occurred
#onthisday
in 1812.
The M~7.3 earthquake struck at 9:15 am local time and would be followed by a M~7.5 just two weeks later.
Learn more ➡️
@USGS_Quakes
#NaturalHazards
#history
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THREAD: Aftershock Forecast Updates: This forecast is based on data collected as of 7:55AM 2019-7-6 PDT
According to our forecast, over the next 1 Week there is a 3 % chance of one or more aftershocks that are larger than magnitude 7.1...
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Next month marks the 39th anniversary of the eruption of
#MountStHelens
. Here's a great pic of the north flank 9/79
#tbt
#WA
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Banded iron formation showing alternating layer of iron-rich magnetite and silica-rich chert, deposited in oceans roughly 2.5 billion yrs ago, on a vastly different Earth
#Geology101
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THREAD: A strong (Mw 6.4) earthquake occurred 12 km SW of Searles Valley,
California on the China Lake Naval Air Center at 10:33:48 am local
time on July 4, 2019. The closest big population center is the city of
Ridgecrest with a population of 28k people.
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Bees, butterflies...and
#bats
! Did you know that some bats are pollinators? Almost 300 species of fruits are pollinated by bats: .
#BatWeek
#TriviaTuesday
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