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Fairweather Fault — Five geologists spent two weeks in the Alaskan wilderness studying one of the fastest-moving earthquake faults in North America—Fairweather Fault in Glacier Bay National Park.
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Despite huge advancements in remote sensing (e.g., satellite) technology, there is still a need for scientists to physically look at, study, and collect samples from the Earth’s surface in order to decipher its history.
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For example, during their fieldwork, the team discovered that the valley east of Icy Point had been impacted by both glaciers and faulting in the geologic past. They discovered the valley once had been filled by a lake. The field crew collected samples of trees buried by gravel from glacial outwash streams, and radiocarbon dating will determine when the trees died. They also found bivalve shells on a terrace lifted 30 feet above today’s sea level, from which they will determine the age and rate of that uplift. The team will use the age and elevation of the deposits above sea level to understand how fast the landscape has been lifted up or down by large earthquakes.
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“Geologists have to go into the field to collect data,” said San Andreas Fault-expert Dr. Kate Scharer. “Though satellite images are important, we cannot collect samples of the past landscapes from behind our desk. We will take our observations back to the lab and the computer, but for this type of work, there is no other method but to start in the field.”
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➡️Read more about this story and the work at: go.usa.gov/xnKYd
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1. Kate Scharer using a GPS unit to get precise measurements of the elevation of the coast line in Glacier Bay National Park.
2. Rob Witter examining the contact between glacial lake beds (grey, below) and river gravels (brown, above) that show how the landscape has changed over time.
3. Rob Witter, Harvey Kelsey and Kate Scharer examine deposits on the surface.
4. Landscape view of Glacier Bay National Park.
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#USGS #science #earthquakes #faults #Alaska #fieldwork #FairweatherFault #geology #seismic #naturalhazards #quakes #GlacierBay #GlacierBayNationalPark #NationalParks #data #mapping

With everything going on,from #naturalhazards to #Trump being elected and #11septembermemorial I want to send some love to the #USA stay #strong 💜

Alerta roja en Chile tras la erupción del volcán Calbuco #naturalhazards #naturaldisasters #volcancalbuco #chile 🌋

Throwback to when my geography class explored Johnson, Pennsylvania!! 🍃🍂🍁#tbt #fallof2016 #physicalgeography #naturalhazards

80 minutes of class time is made easier when you have teammates! #takeoverthursday #earthscienceclass #naturalhazards

Researchers from @uncchapelhill and @ncstate collect both tap and surface water in Lumberton to test for contamination levels post-Hurricane Matthew. #ResearchUNCovered #NaturalHazards #BecauseScience #Environment #Research

Mass wasting in action! Turns out the trail I hiked down was closed because is crossed this landslide (or slip as they say in NZ). I didn’t discover that it was closed until I reached the bottom! Thankfully! It was at the very end of a long loop trail, so that would’ve meant a very long hike back around the whole loop! #environmentalgeology #masswasting #landslides #naturalhazards #newzealand #piha

As a self-described klutz my days of walking just got a little more challenging.
#applecreekfarm #shorterdays #icy #naturalhazards

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Mass wasting in action! Turns out the trail I hiked down was closed because is crossed this landslide (or slip as they say in NZ). I didn’t discover that it was closed until I reached the bottom! Thankfully! It was at the very end of a long loop trail, so that would’ve meant a very long hike back around the whole loop! #environmentalgeology #masswasting #landslides #naturalhazards #newzealand #piha

Fairweather Fault — Five geologists spent two weeks in the Alaskan wilderness studying one of the fastest-moving earthquake faults in North America—Fairweather Fault in Glacier Bay National Park.
▫️
Despite huge advancements in remote sensing (e.g., satellite) technology, there is still a need for scientists to physically look at, study, and collect samples from the Earth’s surface in order to decipher its history.
▫️
For example, during their fieldwork, the team discovered that the valley east of Icy Point had been impacted by both glaciers and faulting in the geologic past. They discovered the valley once had been filled by a lake. The field crew collected samples of trees buried by gravel from glacial outwash streams, and radiocarbon dating will determine when the trees died. They also found bivalve shells on a terrace lifted 30 feet above today’s sea level, from which they will determine the age and rate of that uplift. The team will use the age and elevation of the deposits above sea level to understand how fast the landscape has been lifted up or down by large earthquakes.
▫️
“Geologists have to go into the field to collect data,” said San Andreas Fault-expert Dr. Kate Scharer. “Though satellite images are important, we cannot collect samples of the past landscapes from behind our desk. We will take our observations back to the lab and the computer, but for this type of work, there is no other method but to start in the field.”
▫️
➡️Read more about this story and the work at: go.usa.gov/xnKYd
▫️
1. Kate Scharer using a GPS unit to get precise measurements of the elevation of the coast line in Glacier Bay National Park.
2. Rob Witter examining the contact between glacial lake beds (grey, below) and river gravels (brown, above) that show how the landscape has changed over time.
3. Rob Witter, Harvey Kelsey and Kate Scharer examine deposits on the surface.
4. Landscape view of Glacier Bay National Park.
▫️
#USGS #science #earthquakes #faults #Alaska #fieldwork #FairweatherFault #geology #seismic #naturalhazards #quakes #GlacierBay #GlacierBayNationalPark #NationalParks #data #mapping

Wednesday GPS spotlight! GPS station P224 helps scientists understand both earthquakes and "creep" along the Hayward fault in the San Francisco Bay area. Researcher Roland Bürgmann (University of California, Berkeley) tells us, "The Hayward Fault is one of our most important research targets in the San Francisco Bay Area. The fault had a large (magnitude ~7) earthquake in 1868, but also creeps, or slips steadily by a few mm each year, on substantial portions of the fault surface. We use GPS data from P224 and other stations to estimate the slip rate on the Hayward Fault, and to determine where the fault is creeping and where it is locked." (Photo/Roland Bürgmann)

Check out the link in our bio to read more about this station and see the data its collected!

#unavco #geodesy #geology #geoscience #earth #earthscience #science #fieldwork #fieldengineer #education #outreach #scienceoutreach #engineer #research #data #haywardfault #california #sanfrancisco #bayarea #earthquake #naturalhazards #gps

#Repost from Handicap International United States

When floods, storms and droughts strike, people are forced to flee their homes, putting them in danger's path. For persons with disabilities, the consequences can be deadly.
It is crucial that local people are trained directly in case of a natural disaster. Being more prepared for such events would save lives!

#IDDR2017 #switch2sendai
#disability #inclusive #inclusion #disabilities #disaster #hazards #naturalhazards #flood #storm #drought #idps

"Avalanches accounted for 64% of all deaths caused by natural hazards in Utah from 1994-2005. Check your local avalanche advisory before going into the backcountry." This is a snap of the screen at the Utah Water Research Lab's big screen monitor displaying useful water and Utah factoids minute by minute all day long.
#avalanchesafety #snowscience #naturalhazards #knowbeforeyougo #learneveryday #notmyphoto

A young man looks over to the site of the mudslide that hit Regent, Sierra Leone, on August 14.
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Houses engorged by the ground. Battered belongings scattered like the rocks that tumbled down and took them away. So many lives lost, their memories buried, but not forgotten. One force, one place, one time. Countless futures forever changed. .
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#sierraleone #freetown #regentmudslide #naturaldisaster #landslide #disasterzone #disasterrelief #naturalhazards #natgeo #natgeotravel #natgeoyourshot #lensculture #earth_shotz #naturephotography #landscapephotography #photojournalism #magnumphotos #photooftheday #gettyimages #afpphoto #bbc #reportage #documentary #documentaryphotography #humanitarian #humanitarianaid #lensculture #gettyreportage #burndiary

The rest of this bell tower/church has been hidden beneath lava flows from the 1794 eruption of Vesuvius🌋 #volcanology #GIDField #volcanology #naturalhazards #disastermanagement #geography #italy #italian

Sulfur emissions in the crator of Vesuvius🌋 #volcanology #naturalhazards #vesuvius #disastermanagement

May or may not have been a highlight of my day🐱 #Herculaneum #ercolano #volcanology #naturalhazards #mychesterstory #GIDField

Volcanic stratigraphy from Vesuvius 79AD eruption #geology #naturalhazards #volcanology #disastermanagement

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