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Rowena Lohman

@rowenalohman.bsky.social
2.5K followers 892 following 192 posts

InSAR! 🦇On my radar: Earthquakes, subsidence, land surface properties and change detection. 🏳️‍🌈 🏳️‍⚧️ 💛🤍💜🖤 Personal account

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Rowena Lohman @rowenalohman.bsky.social · 5h
Thanks to Francisco Delgado (fdelgadodelapuente.github.io) for alerting me to how well this M5.5 earthquake in Peru shows up in NISAR data. Event page: earthquake.usgs.gov/earthquakes/... This is the automatically produced GUNW (id in followup)
NISAR interferogram with rainbow colormap (sorry) over the magnitude 5.5 Huamancaca Chico, Peru, earthquake, overlain in Google Earth.  The earthquake shows up as a series of clear fringes in the upper part of the image, covering about 5-10 km. There is also a 70 mile (sorry) scale bar, and the Google Earth watermark.
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Brett "Solidarity 2026" Banditelli @banditelli.org · 04/10/2026
Boooooo
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Rowena Lohman @rowenalohman.bsky.social · 04/10/2026
I spent a good chunk of my toddlerhood in Belo Horizonte - I find it fun how most U.S. folks have never heard about that city, but almost everyone I’ve met from Brazil lived there at some point. Anyway, go Brazil at the polls today! 🇧🇷
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Dr Hannah M. Rowland @hannahmrowland.bsky.social · 01/10/2026
Hope your day was better than Darwin’s, on this day 165 years ago
I am very poorly today & very stupid & hate everybody &everything.

Charles Darwin
Letter to Charles Lyell
1st October 1861
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Rowena Lohman @rowenalohman.bsky.social · 01/10/2026
New catalog of geodetically-constrained finite fault solutions (gCent) released by USGS: apps.usgs.gov/earthquakes/...
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Dave Petley @davepetley.bsky.social · 01/10/2026
Examination of @planet.com satellite imagery before the 26 August 2026 Langtang Lirung landslide in Nepal, which initiated the massive debris flow and flood, suggests that there were surprisingly few signs of incipient failure:- eos.org/thelandslide...
Satellite image draped onto the Google Earth DEM for the Langtung Lirung landslide. Image copyright Planet Labs, used with permission, collected on 25 August 2026.
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Dave Petley @davepetley.bsky.social · 29/09/2026
On 27 September 2026, a large landslide at Lete on the Kaligandaki River in Nepal was captured on a very good video. eos.org/thelandslide...
Google Earth image of the site of the 27 September 2026 landslide on the Kaligandaki River in Nepal.
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Mayor Zohran Kwame Mamdani @mayor.nyc.gov · 24/09/2026
Never been to the opera before? Now’s your chance. We’re giving away 70,000 free tickets to the @metopera at the iconic Lincoln Center. Go to on.nyc.gov/opera to enter the lottery. There’s not a bad seat in the house.
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Alka Tripathy-Lang @dralkatrip.bsky.social · 24/09/2026
In my latest for @earthscope.org, I dug into how fiber optic cables can help us better understand flash floods in the SW US. DAS may not be ready for flood early warning, but it can help define thresholds for the switch from infiltration to overland flow. ⚒️🧪 ngf.earthscope.org/news/from-ra...
ngf.earthscope.org
From rain to rills, DAS detects prerequisite to southwest U.S. flash floods | National Geophysical Facility
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Rowena Lohman @rowenalohman.bsky.social · 14/09/2026
Really excited to see that the "Challenges and Opportunities for Research in ESI" CORE 2.0 report is out! This represents over two years of work capturing the state of earth science observational needs by a large swath of the community. www.nasa.gov/core-2-0-rep...
nasa.gov
CORE 2.0 Report - NASA
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Julie Elliott @julieelliott.bsky.social · 09/09/2026
PhD opportunities in #geodesy at MSU! Students will use InSAR along with other geodetic data sets to characterize complex surface deformation that varies in time and space. More info below. Please get in touch if interested. Priority deadline is Nov. 30. 🧪 ⚒️ 🛰️ sites.google.com/msu.edu/juli...
sites.google.com
Julie Elliott - Student Opportunities
Interested in learning about how plate tectonics or cryospheric processes work? Want to apply programming skills and cutting edge technology to investigate the Earth? Graduate work or undergraduate ...
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Rowena Lohman @rowenalohman.bsky.social · 04/09/2026
Down with Mercator…
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Rowena Lohman @rowenalohman.bsky.social · 03/09/2026
You may be able to hide from the Discover feed, but you cannot hide from the DSCOVR feed.
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Dr. Wendy Bohon @drwendyrocks.bsky.social · 03/09/2026
Have you seen the @sfchronicle.com article “New calculations raise the odds of a major Bay Area earthquake”? Here’s my hot take. 🔥 Article 👉 www.sfchronicle.com/bayarea/arti...
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Rowena Lohman @rowenalohman.bsky.social · 02/09/2026
Happy to see @rbiessel.bsky.social 's paper out: "Displacement Heterogeneity and Associated InSAR Closure Phases in a Permafrost Landscape". MORE ways that we can end up with non-zero phase misclosure, on top of all the effects from vegetation and soil moisture. ieeexplore.ieee.org/document/116...
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Dave Petley @davepetley.bsky.social · 26/08/2026
Some initial thoughts on the catastrophic debris flow in Nepal and Tibet in Nepal and Tibet today:- eos.org/thelandslide... This draws on the initial analysis of @planet.com images by @watershedlab.bsky.social
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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 26/08/2026
The source of the flood in Nepal is a collapsed glacier 🧪⚒️
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Rolling Stone @rollingstone.com · 25/08/2026
Dolly Parton's family asked that, in lieu of flowers, fans make a donation to the singer's Imagination Library. Here's what the charity does ⬇️ www.rollingstone.com/music/music-...
rollingstone.com
Turning Pages: Inside Dolly Parton's Imagination Library
Core team of 15 staff and thousands of volunteers and partners help the country-music philanthropist deliver books to kids around the world.
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Nat Guest @unfortunatalie.bsky.social · 24/08/2026
Colleague didn't join a call but I had Gemini Notes switched on and it the transcript caught me talking to the cat.
Summary

Meeting logistics review addressed attendance verification and confirmed denial of additional catering requests.

Addressing Catering Request
Denial of secondary meal requests was finalized for shouting individuals. It was confirmed that participants had already consumed dinner.

Meeting Attendance Verification
Clarification regarding confirmed attendees occurred. Questions were raised about pending arrivals for the session.

Connection Status Check
Technical connection status was assessed. The presence of additional participants on the call remained under review.
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Olúfẹ́mi O. Táíwò @olufemiotaiwo.bsky.social · 16/08/2026
Plenty to reflect about re: the Arday affair, but I'm going to repeat this one thing. The playbook the right used here is effective even though it's not especially sophisticated, as it relies on the audience to do the dirty work. I've been calling it "Trojan horse propaganda", let's go with that. 1/
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Rowena Lohman @rowenalohman.bsky.social · 05/08/2026
If you are sharing your full desktop on zoom with all your chrome tabs visible, I *will* absentmindedly try to click on your gmail inbox tab thinking it is mine. Those are the rules.
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Dr. Heather McFarlin @volcanoheather.bsky.social · 05/08/2026
Pleqse share!! Postdoc opportunity for near-real-time landslide detection in Alaska!!! The successful applicant will get to work with the amazing @ezgikarasozen.bsky.social See this page for more info! earthquake.alaska.edu/job-opportun... 🪨⚒️🧪
earthquake.alaska.edu
Job Opportunities | Alaska Earthquake Center
The Earthquake Center’s success is built through the collaboration of people with different specialties. Our team includes scientists, technicians, engineers, communications professionals, IT speciali...
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Gov. Bob Ferguson @governorferguson.bsky.social · 02/08/2026
If youre not sure where to find evacuation maps and notifications for your area, @wadnr.bsky.social has posted links on their wildfire portal: dnr.wa.gov/wildfire-res...
dnr.wa.gov
Wildfire Portal | Department of Natural Resources
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Rowena Lohman @rowenalohman.bsky.social · 31/07/2026
NISAR animation before I leave work. Data from June 28 and July 10 over Australia, where the first date was acquired during a big rainstorm (rain rate from IMERG in green-red colors). Note that the NISAR data is much brighter near the storm on that date than it is on the following, July 10 date.
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Jochen Spangenberg @jospang.bsky.social · 31/07/2026
@henkvaness.bsky.social is shocked and has more details on this Google move www.digitaldigging.org/p/how-to-pla...
digitaldigging.org
How to plant a nuclear plant in Iran
The question is: what on earth is Google doing?
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Micah @rincewind.run · 30/07/2026
let trans women play sports with their friends, end of story
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EMILY WILSON @emilyrcwilson.bsky.social · 23/07/2026
There is a lot to say about the Nolan Odyssey movie. But one point that I think has not been emphasized enough is: this is a film about living in LA, as Nolan, my erstwhile British compatriot and age mate, has done for years. I gather it’s a strange place.
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SpacePolicyOnline @spacepolicyonline.bsky.social · 24/07/2026
Statement from NASA about the fires in Spain near Madrid and NASA's Deep Space Network facilities.
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Rowena Lohman @rowenalohman.bsky.social · 21/07/2026
Data from the NASA-ISRO NISAR mission is now available not only through the Alaska Satellite Facility @ak-satellite.bsky.social , but also in Worldview (worldview.earthdata.nasa.gov), where you can compare the normalized backscatter (i.e., the GCOVS) with other NASA-supported data and models. (1/3)
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Rowena Lohman @rowenalohman.bsky.social · 20/07/2026
yayyyyyyyy.....
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c0nc0rdance @c0nc0rdance.bsky.social · 19/07/2026
Twice a year, Hawai'i experiences a strange moment where the sun appears to be exactly overhead & anything that is completely vertical casts no shadow. Let's learn about Lāhainā Noon, subsolar points & 'Kau ka lā i ka lolo', meaning "the sun rests on the brains."
From a Reddit forum, a photo of a can of coconut milk with a blue label, papyrus text and a flip-top, on a sidewalk.  It seems to hover because there's no visible shadow.  The pavement is sort of unevenly colored, with bright spots, and the grass along it is green and lush.
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Yours in negritude, Ryan K. Smith @mewefree.bsky.social · 19/07/2026
Two people tried to enter a screening of The Odyssey without buying tickets after hiding inside a miniature model of the Trojan Horse. 😂😂😂
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Catherine Winters @catherinewinters.com · 12/07/2026
A modest proposal: a browser plugin that detects "aesthetic" being misused that way and replaces it with "fetch".
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Rowena Lohman @rowenalohman.bsky.social · 12/07/2026
I’m not sure that Bluesky has a large enough number of chicken dust-bathing videos, so here are six seconds of chicken joy.
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Adam Pascale @seislologist.bsky.social · 10/07/2026
Are you ready for AusAlert? Includes a PSA for people in DV situations for the day of the national system test.
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Nick Barber 🌋 @volcannick.bsky.social · 08/07/2026
A devastating loss to so many geoscience educators
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Ash Parrish, Kotaku's LeBron James @adashtra.bsky.social · 08/07/2026
Every day this post becomes ever more correct
@PPathole Tech enthusiasts: My entire house is smart. Tech workers: The only piece of technology in my house is a printer and I keep a gun next to it so I can shoot it if it makes a noise I don't recognize.
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Dr. Jessie Christiansen @aussiastronomer.bsky.social · 05/07/2026
static.klipy.com
Clue: Flames on the Side of My Face
Alt: Clue: Flames on the Side of My Face
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Dr. Eric J. Fielding, PhD @ericjfielding.bsky.social · 28/06/2026
NASA-ISRO SAR (NISAR) satellite imaged Venezuela June 25. NISAR SAR interferometry (InSAR) enabled calculation of surface displacement. Displacements have red tones for east and blue tones for west, with white in middle near-zero over fault rupture. Fault ruptured far to east under ocean. #venezuela
Map of north-central Venezuela with NISAR line-of-sight displacement map shown in false color varying from red to white to blue. Red land moved east (towards satellite) and blue land moved west. InSAR only measures land, so ocean and lakes have no measurements. Background map from Google satellite natural-color images on land and bathymetry in ocean.
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Gareth Funning @gfun.earth · 25/06/2026
Composite plot of the two coseismic interferograms (Sentinel-1, from Copernicus) with the USGS epicenters of the two earthquakes and faults from GEM. The shoreline San Sebastián fault lines up with the fringes in the west and is probably the fault responsible.
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Seismological Society of America @seismosocam.bsky.social · 25/06/2026
🚨 As a service to global researchers working on the 24 June 2026 #Venezuela #earthquakes, SSA has created a short list of our journal papers related to the region. These papers will be freely available until 16 July 2026. #OpenAccess buff.ly/AxzKr5V ⚒️
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Gareth Funning @gfun.earth · 25/06/2026
It's taken me a while, but here is my first interferogram of the Venezuela earthquakes from Sentinel-1. It's an ascending track to the west of the epicenter, and the pattern of displacements is consistent with slip on a fault that runs close to and parallel to the coast.
Interferogram of the earthquakes in Venezuela. Shows the western extent of the rupture, and that the earthquake was likely on an E-W striking fault.
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Zack Labe @zacklabe.com · 24/06/2026
We often say this heat wave is a glimpse of our future. That's true, but it's only part of the story. Conditions like these will become more common, but even more intense heat waves will then emerge, with worsening impacts on people and ecosystems. Graphic from climate.copernicus.eu/esotc/2025/t...
Graphic showing heat stress days are increasing while cold stress days decline in Europe for a few metrics. This is for the average number of heat stress days, tropical nights, and cold stress days in Europe from the WMO RA VI since 1980.
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Dave Petley @davepetley.bsky.social · 25/06/2026
#Landslides and #liquefaction from the 24 June 2026 "double tap" earthquakes in Venezuela, and some thoughts about helpful and more accurate ways for the media to report the news about this event. eos.org/thelandslide... #earthquake #terremoto #Venezuela #terremotoVenezuela
The USGS Pager liquefaction Map for the 24 June 2026 M=7.5 earthquake in Venezuela.
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Dr. Wendy Bohon @drwendyrocks.bsky.social · 25/06/2026
Ok you guys. Here’s the deal. The M7.1 in Venezuela was upgraded to a M7.2. AND it was followed shortly by a M7.5. Not good.
Location of the M7.2 and M7.5 in Venezuela
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Rowena Lohman @rowenalohman.bsky.social · 24/06/2026
Four new chicks have joined us, here are the two most sassy ones. Plus a shot of our older ladies.
Chipmunk-striped Bielfelder chick in a hand, looking at the camera quizzically Partridge Cochin chick with feathered feet in a woman’s hand, looking coyFour adult chickens of various colors on a mix of grass, moss, and violets
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Gareth Funning @gfun.earth · 15/06/2026
Olivia Paschall (Cornell): "Bad" pixels (pixels with high amplitude dispersion) in desert areas show more apparent uplift than "good" pixels. You can get a 2 mm/yr bias in uplift rates! Don't average good pixels with bad! Comparing VV and VH polarization time series can help find the bad pixels!
Maps of InSAR velocities in the Laguna Salada area in Mexico – good pixels show positive range change (subsidence). Bad pixels show uplift! The modal difference is 2 mm/yr of uplift!
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Rowena Lohman @rowenalohman.bsky.social · 17/06/2026
Cornell InSAR alums starting to span a pretty wide range of missions…
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Dave Petley @davepetley.bsky.social · 09/06/2026
To date news reports suggest two fatal landslides with a combined toll of 17 people triggered by the 8 June 2026 M=7.8 earthquake offshore Mindanao in the Philippines. eos.org/thelandslide...
eos.org
Reports of landslides triggered by the Mindanao earthquake
To date, there are reports of two fatal landslides triggered by the 8 June 2026 M=7.8 earthquake offshore Mindanao in the Philippines
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