Mohammad Mohseni Aref
@mohseniaref.bsky.social
Ph.D. Candidate at Potsdam University (tweets r my own) | #InSAR 🛰️ #Geodesy 📡 #water_resources 🌊 | @[email protected]
Reposted by Mohammad Mohseni Aref
📢 New paper out today in Earth Observation
When two InSAR products disagree, does that mean InSAR is unreliable?
Not necessarily.
We show how spatial resolution, temporal mismatch, validation-network design, and uncertainty can strongly affect conclusions.
📄 Open access:
doi.org/10.5194/eo-1...
When two InSAR products disagree, does that mean InSAR is unreliable?
Not necessarily.
We show how spatial resolution, temporal mismatch, validation-network design, and uncertainty can strongly affect conclusions.
📄 Open access:
doi.org/10.5194/eo-1...
Comment on: “Evaluating InSAR-derived rates of surface-elevation change along the central U.S. Gulf Coast” by Li et al. (2026)
Abstract. Li et al. (2026) compare two InSAR-derived surface-elevation change datasets, reported by Ohenhen et al. (2024; hereafter O24) and Wang et al. (2024; hereafter W24) for the central U.S. Gulf...
doi.org
September 30, 2026 at 2:49 PM
📢 New paper out today in Earth Observation
When two InSAR products disagree, does that mean InSAR is unreliable?
Not necessarily.
We show how spatial resolution, temporal mismatch, validation-network design, and uncertainty can strongly affect conclusions.
📄 Open access:
doi.org/10.5194/eo-1...
When two InSAR products disagree, does that mean InSAR is unreliable?
Not necessarily.
We show how spatial resolution, temporal mismatch, validation-network design, and uncertainty can strongly affect conclusions.
📄 Open access:
doi.org/10.5194/eo-1...
Reposted by Mohammad Mohseni Aref
New catalog of geodetically-constrained finite fault solutions (gCent) released by USGS:
apps.usgs.gov/earthquakes/...
apps.usgs.gov/earthquakes/...
October 1, 2026 at 4:47 PM
New catalog of geodetically-constrained finite fault solutions (gCent) released by USGS:
apps.usgs.gov/earthquakes/...
apps.usgs.gov/earthquakes/...
Reposted by Mohammad Mohseni Aref
The videos from this year's incarnation of the ISCE+ training course, supported by @earthscope.org are now online! Lots of great material in there for your edification!
www.youtube.com/playlist?lis...
www.youtube.com/playlist?lis...
2026 Technical Course: InSAR Processing and Analysis (ISCE+) - YouTube
This 5-session course covers basic and advanced InSAR theory and hands-on processing of Sentinel-1 and NISAR data using the JPL/Caltech InSAR Scientific Comp...
www.youtube.com
August 26, 2026 at 9:31 PM
The videos from this year's incarnation of the ISCE+ training course, supported by @earthscope.org are now online! Lots of great material in there for your edification!
www.youtube.com/playlist?lis...
www.youtube.com/playlist?lis...
Reposted by Mohammad Mohseni Aref
All of the Jupyter notebooks used in the sessions are available through GitHub here: github.com/isceplus/202...
(Note that the OSL online system that we used in the course is operated by ASF and only available during the course, so please don't bother the EarthScope staff with requests for access.)
(Note that the OSL online system that we used in the course is operated by ASF and only available during the course, so please don't bother the EarthScope staff with requests for access.)
GitHub - isceplus/2026-isceplus: Contains materials for the 2026 Technical Short Course: InSAR Processing and Analysis (ISCE+)
Contains materials for the 2026 Technical Short Course: InSAR Processing and Analysis (ISCE+) - isceplus/2026-isceplus
github.com
August 26, 2026 at 9:31 PM
All of the Jupyter notebooks used in the sessions are available through GitHub here: github.com/isceplus/202...
(Note that the OSL online system that we used in the course is operated by ASF and only available during the course, so please don't bother the EarthScope staff with requests for access.)
(Note that the OSL online system that we used in the course is operated by ASF and only available during the course, so please don't bother the EarthScope staff with requests for access.)
Reposted by Mohammad Mohseni Aref
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.
June 25, 2026 at 5:55 PM
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.
Reposted by Mohammad Mohseni Aref
Another interferogram (Sentinel-1, descending track) covering the bulk of the rupture. The fact that you see essentially (the southern) half of the displacement pattern, indicates that the fault was offshore, or close to it. The noisiness is due to the tropical vegetation in-region.
June 25, 2026 at 7:32 PM
Another interferogram (Sentinel-1, descending track) covering the bulk of the rupture. The fact that you see essentially (the southern) half of the displacement pattern, indicates that the fault was offshore, or close to it. The noisiness is due to the tropical vegetation in-region.
Reposted by Mohammad Mohseni Aref
Four new chicks have joined us, here are the two most sassy ones. Plus a shot of our older ladies.
June 24, 2026 at 9:34 PM
Four new chicks have joined us, here are the two most sassy ones. Plus a shot of our older ladies.
This is the second time that Brazil and Scotland have faced each other at a FIFA World Cup, and on both occasions a catastrophic earthquake occurred shortly afterward.
the 1990 Manjil–Rudbar earthquake, 2026 Caracas earthquake
the 1990 Manjil–Rudbar earthquake, 2026 Caracas earthquake
June 25, 2026 at 7:03 AM
This is the second time that Brazil and Scotland have faced each other at a FIFA World Cup, and on both occasions a catastrophic earthquake occurred shortly afterward.
the 1990 Manjil–Rudbar earthquake, 2026 Caracas earthquake
the 1990 Manjil–Rudbar earthquake, 2026 Caracas earthquake
Reposted by Mohammad Mohseni Aref
“…scientists have revealed it was intense geological activity during a “major globally impacting volcanic event” – and not a legendary battle between two destructive giants – that led to the formation of the [coastline]...” 🤨
Wild statements in this story.
www.theguardian.com/science/2026...
Wild statements in this story.
www.theguardian.com/science/2026...
Globally significant volcanic event formed Giant’s Causeway, scientists find
Geochronologists say basalt columns in Antrim sprang up during volcanic activity over 5.5m years – 8m less than thought
www.theguardian.com
June 20, 2026 at 5:12 PM
“…scientists have revealed it was intense geological activity during a “major globally impacting volcanic event” – and not a legendary battle between two destructive giants – that led to the formation of the [coastline]...” 🤨
Wild statements in this story.
www.theguardian.com/science/2026...
Wild statements in this story.
www.theguardian.com/science/2026...
Reposted by Mohammad Mohseni Aref
📌 Webinar Title: Modeling Soil Moisture from InSAR Closure Phase
🗓 Date: Thursday 26th February
⏰ Time: 4pm UK time (4pm UTC / 5pm CET / 10am US Central)
🎙 Speaker: Dr. Yujie Zheng, University of Texas at Dallas, USA
🔗 Please register here: events.teams.microsoft.com/event/6ca940...
🗓 Date: Thursday 26th February
⏰ Time: 4pm UK time (4pm UTC / 5pm CET / 10am US Central)
🎙 Speaker: Dr. Yujie Zheng, University of Texas at Dallas, USA
🔗 Please register here: events.teams.microsoft.com/event/6ca940...
February 17, 2026 at 1:59 PM
📌 Webinar Title: Modeling Soil Moisture from InSAR Closure Phase
🗓 Date: Thursday 26th February
⏰ Time: 4pm UK time (4pm UTC / 5pm CET / 10am US Central)
🎙 Speaker: Dr. Yujie Zheng, University of Texas at Dallas, USA
🔗 Please register here: events.teams.microsoft.com/event/6ca940...
🗓 Date: Thursday 26th February
⏰ Time: 4pm UK time (4pm UTC / 5pm CET / 10am US Central)
🎙 Speaker: Dr. Yujie Zheng, University of Texas at Dallas, USA
🔗 Please register here: events.teams.microsoft.com/event/6ca940...
Reposted by 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...
ScienceDirect.com | Science, health and medical journals, full text articles and books.
kwnsfk27.r.eu-west-1.awstrack.me
January 29, 2026 at 1:48 PM
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...
Reposted by Mohammad Mohseni Aref
🚨 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
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
January 30, 2026 at 11:39 AM
🚨 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
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
Reposted by Mohammad Mohseni Aref
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...
📹 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...
November 28, 2025 at 12:01 AM
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...
📹 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...
Reposted by Mohammad Mohseni Aref
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.
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...
comet.nerc.ac.uk
November 25, 2025 at 12:50 PM
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.
Reposted by Mohammad Mohseni Aref
🎧 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...
If you missed last week’s live session, you can now watch the full recording here:
🔗 www.youtube.com/watch?v=tuhd...
COMET Webinar: Jin Fang. Satellite Geodetic Constraints on the Kinematics of the Tibetan Plateau
YouTube video by COMET Webinars
www.youtube.com
November 6, 2025 at 5:39 PM
🎧 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...
If you missed last week’s live session, you can now watch the full recording here:
🔗 www.youtube.com/watch?v=tuhd...
Reposted by Mohammad Mohseni Aref
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.
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.
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 (...
agupubs.onlinelibrary.wiley.com
October 27, 2025 at 4:59 PM
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.
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.
Reposted by Mohammad Mohseni Aref
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
👉 www.isprs2026toronto.com/special-sess...
#InSAR #DisasterRiskReduction #ISPRS2026
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.
www.isprs2026toronto.com
September 22, 2025 at 11:39 AM
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
👉 www.isprs2026toronto.com/special-sess...
#InSAR #DisasterRiskReduction #ISPRS2026
Reposted by Mohammad Mohseni Aref
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!
Final deployment of the NASA-ISRO SAR (NISAR) satellite, the 12-meter radar antenna reflector was successfully completed August 15. Congratulations to all people involved in this important milestone of the mission, in USA and India. #NASA #ISRO #SAR #satellite #NISAR www.jpl.nasa.gov/news/giant-r...
Giant Radar Antenna Reflector on NASA-ISRO Satellite in Full ‘Bloom’
Seventeen days after NISAR’s launch from southeastern India, an essential piece of science hardware has unfurled in orbit.
www.jpl.nasa.gov
August 16, 2025 at 9:01 AM
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!
Reposted by Mohammad Mohseni Aref
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...
www.linkedin.com/posts/franzm...
🥳 #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...
www.linkedin.com
August 18, 2025 at 7:48 PM
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...
www.linkedin.com/posts/franzm...
Reposted by Mohammad Mohseni Aref
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!)
August 18, 2025 at 7:44 PM
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!)
Reposted by Mohammad Mohseni Aref
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!
August 18, 2025 at 7:04 PM
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!
Reposted by Mohammad Mohseni Aref
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?...
youtu.be/8SGIrUTRpq0?...
Fault creep: what is it, how do we find it and what does it mean?
YouTube video by Institut de physique du globe de Paris
youtu.be
August 11, 2025 at 4:57 PM
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?...
youtu.be/8SGIrUTRpq0?...
Reposted by Mohammad Mohseni Aref
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!
August 1, 2025 at 9:19 AM
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!
Reposted by Mohammad Mohseni Aref
Reposted by Mohammad Mohseni Aref
In case you are free in the next few minutes:
www.youtube.com/watch?v=sLjv...
www.youtube.com/watch?v=sLjv...
NISAR Mission Countdown: Preview to Launch
YouTube video by NASA Jet Propulsion Laboratory
www.youtube.com
July 21, 2025 at 3:58 PM
In case you are free in the next few minutes:
www.youtube.com/watch?v=sLjv...
www.youtube.com/watch?v=sLjv...