American Geophysical Union

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Team #siios installed seismometers to study the thickness of the Greenland ice sheet in May. The goal of this trip was to service the stations, collect additional data, and remove all instrumentation. Our team quickly learned we had ~1m of snow accumulation from when instruments were installed. Here, Namrah (@namz735) and Bella ( @bella.brodbeck ) are taking a break from digging out the leftover food cache from May. The food was initially buried about ~1m deep to keep the polar bears out which meant our team had dig ~3-4 m holes to uncover/dig out the barrels. It took two days and the entire team to lift the barrels out. #guestgrammer #fieldwork #SIIOS #womeninscience #greenland
Our camp is pretty flat and isolated so on cloudy days we only see white snow and grey clouds. Here Natalie (@nattywags) is checking on snow accumulation over the last two months. Both photos show the landscape and how clouds can remove ground contrast #SIIOS #Greenland #guestgrammer #fieldwork #womeninscience
After 9 days of waiting to fly to the field site from Thule AFB, and 1 full day of setting up camp, team #siios experienced our first midnight sun at Camp Europa.

#fieldwork  #Greenland #guestgrammer #WomeninScience#sunset
These Greenlandic Arctic foxes are a lot more common on the Thule Air Base then one might think! While the #SIIOS team was waiting to get out into the field, we had the privilege of watching the Arctic foxes play and explore in this habitat. These foxes are unique among mammals in that they are monogamous and the parents raise their young together. They also play an important role managing the local ecosystem by feeding on mice, birds, eggs, and fish. .
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#guestgrammer #womenofscience #greenland #agu #geology #animals #foxes
3 days, 3 flights, and 2 helicopter rides later...
US > Reykjavik, Iceland >  Ilulissat, Greenland > Qaanaaq, Greenland > Thule, Greenland > Camp Europa (105 km north of Thule)

The first photo shows Camp Europa from a helicopter viewpoint followed by a map of camp Europa in Greenland, lastly an image of the helicopter used to transport team #siios PC: Tony Olsen #fieldwork  #Greenland #guestgrammer #WomeninScience
Introducing Team SIIOS (Seismometer to Investigate Ice and Ocean Structure) as your #guestgrammer. Pictured are our Co-I Dani, grad student Angela (@planetaryquakes) undergrads Natalie (@nattywags), Bella (@bella.brodbeck), technician Namrah (@namz735), our field expert Suz, and two of our helicopter pilots. Stayed tuned to learn how we use Greenland as an analog for Europa, to learn how seismometers can help us investigate icy worlds. #AGU #fieldwork #Greenland #SIIOS #womeninscience
Check out the cool geology we saw from the air (brb, buying an airplane for my next mapping assignment)! Also a HUGE shoutout goes to my advisor, Dr. Derek Schutt! Without him none of this would have been possible. Andddd that’s all folks! This is David Heath, your #guestgrammer, (@iamdavidheath) signing off! I hope you enjoyed the pics! [Image descriptions: Image 1: Aerial view of the mouth of Dodo Canyon. Image 2: Flying closely over a ridge of dipping bedded rock. Image 3: Scenic aerial view of a braided river system in a valley. Image 4: Flying above the clouds - totally white in all directions. Image 5: Sunset view on a lake from the floatplane. Image 6: My advisor hard at work, fishing the battery out of the acid-water mixture from a seismometer site (with pink gloves). Image 7: My advisor and I trying to stay dry during a rainy station demobilization.] #agu #seismo #seismology #canada #mackenziemountains #normanwells
Bear attack! This is exactly what we don’t want to see walking up to a seismic station. Lids ripped off, instruments strewn about, water filling the action packer. The stations are resilient though - some of them will keep recording despite being exposed to the elements like this. [image descriptions: Image 1: Lid ripped off and instruments strewn about a seismic station and sensor. Image 2: Lid ripped open then closed, with instruments coming out. Image 3: nite mark in an action packer lid.]#guestgrammer #agu #seismology
#guestgrammer David Heath back for another day of #seismo posts! Here’s a quick walk through of what it looks like when we demobilize seismometers. Image 1: Walk up to the site after landing in the float plane. Hope for no bears! The solar panel is visible above ground - it keeps the station running through summer. Image 2: You can barely see the action-packer buried here. This holds our batteries and the hard drive recording the data. Image 3: The sensor! This is what actually “feels” the earthquakes and reports those vibrations to the box in pic 2 (Dr. Derek Schutt seen working hard!) Image 4: Everything gets pulled up and packed away. Image 5: The data gets downloaded. We can download from 4 hard drives at once. Image 6: We inventory all the gear, clean it, and pack it away one last time to send off to IRIS! Bonus Image 7: The northern lights!!! Despite only a few hours of real darkness every night we were able to get this shot (📷from my advisor, Dr. Derek Schutt) on a clear night.
Float planes are the only way to access many of the remote seismometer stations deployed in the Mackenzie Mountains. Our goal on this trip was to demobilize the stations - basically pick everything up and return them to the States. Since the pilots only navigate by sight we were constantly worried about cloud cover. If we spent too long at a station while fog or clouds rolled in we could be stuck there for the night. [Image descriptions: Image 1: Aerial view of a small canyon with water running through it. Image (video) 2: Panoramic video of the plane and surrounding mountains after landing in a small lake.] #guestgrammer #canada #porter #agu
This is David Heath reporting in as your #guestgrammer, taking over the AGU instagram account! I’m a second-year MS student studying seismology at Colorado State University, and this week I’ll be showing off some pictures of my recent fieldwork in northern Canada. Stay tuned to learn more about seismometer deployments, float planes, destructive bears, and why it all matters! [Image descriptions: Image 1: Myself posing with a glacier from the deck of a boat in Alaska. Image 2: Pilot standing on the pontoon of a float plane on a remote lake with mountains in the background on a cloudy day. Image 3: Scenic view from a lush valley floor of the surrounding mountains.] #canada #seismology #fieldwork #agu
Seismic activity on the moon! Did you know from 1972-77, 28 moonquakes were recorded thanks to seismometers placed by #Apollo astronauts? Here's @drbuzzaldrin  placing the first of these instruments in 1969. Visit https://centennial.agu.org/outreach-campaigns/100-facts-and-figures/ for more on 100 Facts & Figures 
#AGU100 #moonquakes #seismology #tidalforces #seismic #apollo #nasa