Mohammad Mohseni Aref

Excited to share the 2nd paper from Olivia Paschall's PhD work, where she demonstrates how adding cross-polarized SAR imagery to the normal co-polarized data can improve inferred deformation rates, applied to Death Valley: kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...

🚨 New map redraws our understanding of how continents deform 🚨

We are excited to share ground-breaking work led by COMET Co-Director @timwrightleeds.bsky.social, published in @science.org. Read more: comet.nerc.ac.uk/new-map-redraws-our-understanding-of-how-continents-deform/

#Tectonics #Research

COMET InSAR Training Workshop 2025 Resources Now Available!

📹 Full video recordings are live on the COMET YouTube channel: www.youtube.com/watch?v=w0tb...

📊 Presentation slides and practical materials are available on GitHub: comet-licsar.github.io/ciw.html#com...

Event Response Reports - COMET 25th November 2025: COMET Event Response Report 2.4 – Erta Ale/Hayli Gubbi Purpose/Caveats: This event response report was produced to assist situational awarenessand rapid response efforts. It repres...

Our preliminary analysis of the satellite observations of the #hayligubbi #eruption is now available online: comet.nerc.ac.uk/event-respon.... Details of the eruption onset, SO2 emissions and precursory deformation.

YouTube video by COMET Webinars COMET Webinar: Jin Fang. Satellite Geodetic Constraints on the Kinematics of the Tibetan Plateau

🎧 The latest COMET webinar is now available on YouTube!

If you missed last week’s live session, you can now watch the full recording here:
🔗 www.youtube.com/watch?v=tuhd...

Recovering permanent displacements from seismic records of the June 9, 1994 Bolivia deep earthquake Ground displacements of the 1994 deep Bolivia earthquake are recovered from six on-scale velocity records of a temporary array located ∼600 km south of the epicenter. I first removed the instrument (...

Permanent deformation of the Earth and its surface happens after *every* earthquake, no matter it's depth or distance.

This has been known to seismologists for decades, because we can see the permanent offset in our seismograms. With large earthquakes, even 100s of km will still cause mm of offset.

ISPRS 2026 Special Sessions Discover ISPRS 2026 Special Sessions – expert-led, in-depth discussions on emerging topics in photogrammetry, remote sensing, and spatial information sciences.

If you’re working on ground motion, hazards, or resilience—we’d love your contribution. Join us in Toronto!
👉 www.isprs2026toronto.com/special-sess...

#InSAR #DisasterRiskReduction #ISPRS2026

Went out downtown tonight and got leathered with my friend Gordon. (No reason, except Friday.) On the way home, my Uber driver asked me lots of fun questions about earthquakes. And now I'm home and learning that NISAR successfully deployed its reflector?! What a great evening!

🥳 #InSAR Crowd 🥳 | Franz J. Meyer 🥳 #InSAR Crowd 🥳 We just started day #1 of the 2025 ISCE+ InSAR 🌈 🛰️ training coordinated by the EarthScope Consortium. We have 150 people in the course, all excited about InSAR and especially NISAR...

I did not have the opportunity to screengrab myself while I was talking earlier (super coherently, I'm sure) about the basics of geophysical modeling, but Franz did...

www.linkedin.com/posts/franzm...

Screengrab from Zoom, on the left a slide about the relationship between surface topography and interferometric phase (the basis for topographic mapping using InSAR), the right a picture of the instructor, Ann Chen.

Here is Ann Chen on a deep dive into InSAR theory, explaining the basis of using InSAR in mapping topography. (Later she will talk about measuring deformation and the causes of decorrelation, all the good stuff!)

Screengrab of the Zoom from today's class. On the left is the output of a Jupyter notebook showing multiple plots of potential displacement of the volcano for different source locations. On the right is Franz Meyer, my co-instructor, who is leading this session.

It's Day 1 proper of this year's EarthScope #InSAR Processing and Analysis short course (the "ISCE+" course)! Here, Franz Meyer is leading participants through a simple Mogi source modeling exercise using InSAR data from Okmok volcano! Real data and real models on an interactive online platform!

YouTube video by Institut de physique du globe de Paris Fault creep: what is it, how do we find it and what does it mean?

Not only did I give a talk at IPGP, but they recorded it and recently uploaded it to YouTube! If you want to hear me talking about fault creep and the various approaches my group uses to study it, this video is for you!

youtu.be/8SGIrUTRpq0?...

Screen grab of a wrapped interferogram over southern Kamchatka

First Sentinel-1 interferogram from southern Kamchatka! Lots of what I am assuming are tropospheric signals (e.g. over the volcanoes), but I also see long-wavelength fringes that change in azimuth from the NE (~shore-perpendicular) to the SW (~shore-parallel). Optimistic it could be the earthquake!

Comment mesure-t-on la force d’un séisme ? Intensité, magnitude, échelle de Mercalli… depuis les années 1960, les sismologues n’utilisent plus la célèbre échelle de Richter, lui préférant la magnitude de moment basée sur des mesures physiques.

www.lemonde.fr/les-decodeur...

YouTube video by NASA Jet Propulsion Laboratory NISAR Mission Countdown: Preview to Launch

In case you are free in the next few minutes:
www.youtube.com/watch?v=sLjv...

First tutorial of day in ESA living planet 2025 #LPS25 on #hylite for hyperspectral mapping

Just arrived in Vienna for the ESA Living Planet Symposium after a difficult week shadowed by war. Grateful for the chance to unwind a bit and looking forward to reconnecting with friends and colleagues. 🌍✨ #ESALivingPlanet #Vienna #RemoteSensing

Evaluation of Vegetation Bias in InSAR Time Series for Agricultural Areas Within the San Joaquin Valley, CA We quantify the contribution of bias from vegetation and soil moisture effects on InSAR phase and time series We find biases of ∼2–4 cm/yr within agricultural fields, with the largest biases occu...

Congratulations to @kdevlin525.bsky.social on her newly-published (open access) article on the use of InSAR in active agricultural areas like California's Central Valley: agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Seeing Blatten buried again and again, from every angle...

Properly staggering! 😮😱

Images from @Planet before and after Shahid Rajaee Port blast scar near #BandarAbbas.

Shahid Rajaee Port

Sentinel-2 SWIR composite (28 Apr ): the Shahid Rajaee Port blast scar near #BandarAbbas. Data:
@CopernicusEU

#RemoteSensing #EO #Iran

📢⚠️ New Preprint Alert! ⚠️📢

A comprehensive analysis of GNSS‑derived velocities, strain rates, stress orientations, and seismic anisotropy along the Alpine‑Himalayan (Tethyan) Belt—from Iberia to Southeast Asia:

🔗 doi.org/10.22541/ess...

#GNSS #Tectonics #StrainRates #Geodesy

COMET invites you to the next instalment of our COMET webinar series.

Community-driven natural hazard and physical vulnerability assessment – developing a collaborative understanding

23rd April 2025 at 4pm UK time

Dr Annie Winson
BGS, UK

Please register at:
ukri.zoom.us/webinar/regi...

Azimuth offsets of the Myanmar earthquake from Sentinel-1A and Sentinel-1C data. Positive displacements are in the line-of-sight (LOS) direction.

Range offsets of the Myanmar earthquake from Sentinel-1A and Sentinel-1C data. Positive displacements are in the line-of-sight (LOS) direction.

Sentinel-1C(!) acquired new SAR data over Myanmar yesterday. Here are the azimuth and range offsets. Not particularly unexpected (right-lateral slip, 400 km+ long rupture), given earlier InSAR/image offset results, but surprisingly clean, given S1C is not out of its commissioning phase.

Deniz Ertuncay (dertuncay) | Profil - Evrim Ağacı İtalya'da bulunan OGS enstitüsünde deprem bilimci olarak çalışmaktayım.

Herkes nasıl da güzel döküldü buraya. Ben daha cool değilken gelmiştim hehe. Üşengeçlikten anlatacak pek bir şeyim yok şu ara ama @evrimagaci.org 'na her ay düzenli olarak ayın depremi yazısı yazıyorum. Oraya bir bakın.
evrimagaci.org/dertuncay/

PhD position (f_m_x) - Ionospheric Irregularities - Potsdam, Germany - www.earthworks-jobs.com/jobs/gfz25024 - #jobs #research #PhD #ionosphere #atmosphericscience #geodesy #meteorology #physics #geophysics

Map showing the segmentation of the Sagaing fault and the hypothetic historical ruptures

Today's #earthquake near Mandalay, Myanmar, had magnitude Mw 7.7 to 7.9.

Prelim. source models point to rupture duration & length of ~120s and at least 200km. It likely filled large part of seismic gap S of Sagaing (previous rupture in 1839) ⚒️ 🧪

Map from doi.org/10.1002/2013... (Wang et al.)
1/n

Map from the ASF Vertex SAR data search tool showing most recent acquisitions from March 22, 24 and 27. Given the 12 day repeat for the Sentinel-1 satellites, this would suggest the next pass over the likely area of the Mandalay earthquake would be on April 3.

Looking at Sentinel-1 data availability over the Sagaing fault, and it is going to be several days (April 3rd) before Sentinel-1A flies over the likely rupture zone again. Can anyone at @esaearth.esa.int advise on the possibility of Sentinel-1C acquisitions over the area? #MyanmarEarthquake

EERI, through their Learning from Earthquakes Program, made a web page which collects news outlets and scientific resources about the Myanmar earthquake eeri.org/about-eeri/n...

Importing, Processing and Displaying EnMAP Hyperspectral Images with MATLAB - MATLAB and Python Recipes for Earth Sciences On April 1, 2022, a satellite was launched as part of the German Environmental Mapping and Analysis Program (EnMAP) to collect hyperspectral data, which can

On April 1, 2022, a #satellite was launched as part of the German Environmental Mapping and Analysis Program (EnMAP) to collect #hyperspectral data, which can be obtained free of charge. Here is a #MATLAB script to import and display the data:

mres.uni-potsdam.de/2025/03/04/i... #Geoscience