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Richard Walker

@richardthomasw.bsky.social
204 followers 140 following 12 posts

Geologist studying earthquakes, active faults, and regional tectonics. Based at Oxford University. You can find out more about my work at quakesincentralasia.org

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Richard Walker @richardthomasw.bsky.social · 05/10/2026
We have a recent paper investigating the source of this earthquake. One thing in particular is that some clear fault segments do not appear to have ruptured in 1948. academic.oup.com/gji/article/...
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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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José R. Ribeiro @joserodribeiro.bsky.social · 08/09/2026
8 September 2023 22:11 UT Mw6.8 earthquake at the Atlas Mountains, SSW of Marrakesh, Morocco, destroyed entire villages, killing 2960 people - one of the worst Moroccan EQs. Felt in the whole country, Algeria, Portugal and Spain. Help came from all the world. emsc-csem.org/Special_repo...
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Seismica @weareseismica.bsky.social · 26/08/2026
How can a major fault leave earthquake scars but almost no historical earthquakes? 🔗 Read now: seismica.library.mcgill.ca/article/view...
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Reuben College, University of Oxford @reubencollege.bsky.social · 08/06/2026
Congrats to @richardthomasw.bsky.social (Theme Lead, Environmental Change) on co-authoring a paper in @natgeosci.nature.com on how the Euphrates River was formed, tracing how ancient river systems transformed the region over millions of years. Read the paper: www.nature.com/articles/s41...
nature.com
Late Miocene Euphrates River drained into a partially desiccated eastern Mediterranean - Nature Geoscience
Two river systems that drained into the partially desiccated Late Miocene Mediterranean later coalesced into the modern Euphrates River as regional uplift redirected drainage to the Persian Gulf, acco...
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Leverhulme Trust @leverhulme.ac.uk · 08/06/2026
Using seismic‑reflection data, geomorphic mapping, and sediment‑budget modelling, a new study by @richardthomasw.bsky.social and others ‪has shown how the Euphrates River in Western Asia, originated as two distinct river systems. Read 👇 @natureportfolio.nature.com
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Oxford Earth Sciences @oxuniearthsci.bsky.social · 01/06/2026
New research has shown that the Euphrates River, one of the most historically significant river systems in Western Asia, originated as two distinct river systems that drained into the Mediterranean approximately 5.5 million years ago... @richardthomasw.bsky.social buff.ly/wnMkCth
buff.ly
How The Euphrates River Was Born
In a new paper published today in Nature Geosciences, an international team of researchers, including Claudia Bertoni and Richard Walker, investigated the role these waterways had in delivering freshwater to the Mediterranean during the “Messinian Salinity Crisis”, and how tectonic activity redirected their course towards the Persian Gulf.
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Oxford Earth Sciences @oxuniearthsci.bsky.social · 20/02/2026
The Department of Earth Sciences and St Peter's College are recruiting an Associate Professor (or Professor) in Earth Surface Processes to join our thriving academic community! earth.web.ox.ac.uk/vacancies
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Mark Tingay @mudvolcanoguy.bsky.social · 31/01/2026
⚒️🧪Fiery Mud Volcano Eruption! The Daşmərdan (Dashmardan) mud volcano in Azerbaijan erupted ~16:50 on the 30th Jan 2026. The eruption lasted ~15 mins and was accompanied by a pillar of flame several hundred meters high. Daşmərdan had previous documented eruptions in 1866, 1954, 1976, 1986 and 2011.
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paleoseismicity.org @paleoseismicity.bsky.social · 14/01/2026
When paleoseismology becomes uncomfortable: a short fault scarp in a mature orogen. By @speleojacek.bsky.social and Christoph paleoseismicity.org/when-paleose...
paleoseismicity.org
paleoseismicity.org | The online community for paleoseismicity, neotectonics, earthquake geology and archeoseismology
Paleoseismicity.org is a page dedicated to scientists and everyone else interested in paleoseismology, archaeoseismology, neotectonics, earthquake archaeology, earthquake engineering and related topic...
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Oxford Earth Sciences @oxuniearthsci.bsky.social · 11/12/2025
New fully-funded DPhil project with Professor Richard Walker (@richardthomasw.bsky.social) researching the extent, timing, and cause of Quaternary uplift along the Atlantic margin of Morocco! For more information visit our website www.earth.ox.ac.uk/extent-timin...
earth.ox.ac.uk
Extent, timing, and cause of Quaternary uplift along the Atlantic margin of Morocco
Primary Supervisor: Richard Walker
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Dominic Manchee @dpmanchee.bsky.social · 10/12/2025
China has started to build a mega dam across Yigong Tsangpo River. Risky venture ? IMO, yes. Valleys have steep side that are prone to landslides - some have created landslide dams that blocked the river. These have later failed generating a massive flood. earthobservatory.nasa.gov/images/78293...
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Richard Walker @richardthomasw.bsky.social · 04/12/2025
Very nice! @faultydata.bsky.social
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José R. Ribeiro @joserodribeiro.bsky.social · 23/11/2025
23 November 1405 Mw7.5 earthquake destroyed Neyshabur/Nishapur, Rasavi Khorasan province, NE Iran, burying in its ruins many of the inhabitants. Other devastating EQs hit the town in 1209, 1270, 1389 and 1673. doi.org/10.2307/4299... doi.org/10.1785/BSSA... doi.org/10.1785/BSSA...
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Melaine Le Roy @subfossilguy.bsky.social · 20/11/2025
Iran is facing its worst drought since at least six decades! 😱🔥💧 As a result the iconic Damavand (5,609 m asl), Iran's highest peak, was snow-free at mid-autumn, which appears to be unprecedented! ❄️😰 This stratovolcano had a 3.4 km ice cover in 2002... likely gone today! 🧊 📈 📽️ @IranIntl_En
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Melaine Le Roy @subfossilguy.bsky.social · 28/10/2025
UTTERLY SURREAL LOW ANGLE GLACIER SLIDE!! 😮😱 On Saturday at 11:00 am, a 2 km-long, 25 m-high, and 150-200 m in width section detached off the Ismoil Somoni Glacier (Tajikistan) and slid down the gorge! 🧊🌊 asiaplustj.info/en/node/354309 📽️ via @volcaholic1
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RAS Journals @rasjournals.bsky.social · 12/09/2025
Published in #GJI Geophysical Journal International: "Fault creep in the fluid-rich Kura Basin, Azerbaijan, imaged with InSAR", Johnson et al. This is Fig. 11: read the paper at academic.oup.com/gji/article/... @oxfordacademic.bsky.social @royalastrosoc.bsky.social
Perspective view showing merged topography and bathymetry for the South Caspian Basin and its surroundings, with the coastlines shown as thin black lines. Faults are mapped with solid lines for higher confidence and dashed lines for lower confidence. NE-SW trending folds in the deeper parts of the basin are shown using dashed lines with diamond decorations. Large submarine landslides visible in the bathymetry are highlighted with translucent polygons. GNSS data from Kadirov et al. (2014) shows the convergence of the Kura Basin with Eurasia taken up by the KFTB and the Caucasus. The triangular region bounded by the Alat Fault and the Sumquayit Fault is moving eastward relative to the Kura Basin, and appears to extrude into the SCB, possibly contributing the folding of offshore sediments. The South Caspian Basin (SCB) velocity vector located offshore is from Dodds et al. (2022) who used the rates of the basin-bounding faults to infer the velocity of the basin.
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Oxford Earth Sciences @oxuniearthsci.bsky.social · 05/09/2025
Zakeria Shnizai was featured on the BBC Science in Action podcast this week, speaking about the recent #earthquakes in #Afghanistan and the main causes of the country’s vulnerability to earthquakes Listen here: www.bbc.co.uk/sounds/play/...
bbc.co.uk
BBC Sounds - Music. Radio. Podcasts
Listen without limits, with BBC Sounds. Catch the latest music tracks, discover binge-worthy podcasts, or listen to radio shows - all whenever you want.
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Robin Lacassin @rlacassin.bsky.social · 01/09/2025
Link to the paper published in TEKTONIKA #DOAJ @wearetektonika.bsky.social 2/2 ⚒️ tektonika.online/index.php/ho...
tektonika.online
Detailed Active Fault Map of the Spin Ghar Fault System and Related Seismicity in Eastern Afghanistan | τeκτoniκa
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Robin Lacassin @rlacassin.bsky.social · 01/09/2025
Section 👇 from Shnizai & Walker in Tektonika 2024 @wearetektonika.bsky.social shows structure of Jalalabad basin, E #Afghanistan. It's not right across the recent #earthquake but more to the W. The earthquake may have occurred on a thrust fault equivalent to the one to the left of the section. 1/2 ⚒️
Geological cross section across the Jalalabad basin shows several thrust faults dipping to the north-west
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Richard Walker @richardthomasw.bsky.social · 20/08/2025
Yes, completely. We were just passing through and had a short stop
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Richard Walker @richardthomasw.bsky.social · 19/08/2025
We happened to visit the rupture today, on their anniversary!
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José R. Ribeiro @joserodribeiro.bsky.social · 02/08/2025
2 August 1885 21:20 UT (2:20 of 3rd LT) M6.9-7.6 earthquake destroyed Belodovskoe and Karabalta, west of Bishkek (Kyrgyzstan), killing 54 people. Other Northern Tien Chan EQs in 1887, 1889 and 1911. caiag.kg/en/projects/... academic.oup.com/gji/article/... nyshistoricnewspapers.org/lccn/sn83045...
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Richard Walker @richardthomasw.bsky.social · 18/06/2025
Very happy to share this documentary that documents some of the work of our team and our collaborators in learning more about the earthquakes of Central Asia. @jrarrowsmith.bsky.social
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Melaine Le Roy @subfossilguy.bsky.social · 28/05/2025
SPEECHLESS BEFORE / AFTER #BLATTEN The magnitude of destruction after the 3:24 pm collapse of Birch Glacier is immense! 😱 All the forest has been razed and the ice/wood/debris dammed the Lonza river 🌊 Some buildings of Blatten are buried 🏠 📷 Pomona
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Dr. Wendy Bohon @drwendyrocks.bsky.social · 12/05/2025
Watch the ground break and move during the magnitude 7.7 #Myanmar #earthquake. This footage shows the incredible power of the earthquake that devastated parts of Myanmar and #Thailand. My thoughts are with the people impacted by this event. 💔 🧪⚒️
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José R. Ribeiro @joserodribeiro.bsky.social · 10/05/2025
10 May 1997 7:58 UT Mw7.3 Zirkuh earthquake along Abiz Fault, east of Qaen, South Khorasan, NE Iran, destroyed 10,000 houses, killing 1567 people in Iran and 5 in Afghanistan. The seismic sequence begun in 1968. earthquake.usgs.gov/earthquakes/... doi.org/10.1111/j.13... nyshistoricnewspapers.org
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José R. Ribeiro @joserodribeiro.bsky.social · 01/05/2025
1 May 1929 15:38 UT Mw7.2 earthquake and aftershocks, in the Kopet Dag, at Iran-Turkmenistan border, destroyed villages and caused 3800 deaths, most in Iran. The Quchan 1871-95 EQs were in the same fault zone. earthquake.usgs.gov/earthquakes/... jstor.org/stable/74468... chroniclingamerica.loc.gov
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José R. Ribeiro @joserodribeiro.bsky.social · 25/04/2025
25 April 1966 23:23 UT (5:23 of 26th LT) Mw5.2 earthquake destroyed Tashkent, Uzbekistan, killing 15 to 200 people and leaving 300,000 homeless - very shallow and near urban center. earthquake.usgs.gov/earthquakes/... doi.org/10.1016/j.so... en.wikipedia.org/wiki/1966_Ta... e-newspaperarchives.ch
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Oxford Earth Sciences @oxuniearthsci.bsky.social · 25/03/2025
We are excited to be a part of a new multidisciplinary research initiative for sustainable natural resources. The Oxford EARTH programme aims to address the challenges in natural resources underpinning the net zero energy transition 🌎
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David Pyle @davidmpyle.bsky.social · 11/03/2025
A short introduction to the Miocene paleogeography of #Almeria and the #Alboran sea by Hannah Fry ‘Geology is cool man..’ youtube.com/shorts/jt9Wv...
youtube.com
The Mediterranean Sea wasn't always a sea
YouTube video by Hannah Fry
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Richard Walker @richardthomasw.bsky.social · 07/03/2025
Our blog has been a bit quiet over these winter months, but I have added a new article describing our recent trip to Morocco, working with scientists from Mohammed V University in Rabat to understand more about earthquake sources around the Atlas mountains. quakesincentralasia.org/research-upd...
quakesincentralasia.org
Earthquakes in North Africa: a reconnaissance of active faulting along the margins of the Atlas mountains of Morocco – Earthquakes in Central Asia
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Richard Walker @richardthomasw.bsky.social · 28/02/2025
The team is now fully assembled for the Atlas mountains fieldtrip! Looking forward to seeing some faults tomorrow
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Richard Walker @richardthomasw.bsky.social · 28/02/2025
These deep water sources are likely to be increasingly important, but we know so little of their global distribution due to lack of data and study. Repurposed industrial data may hold the key!
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Dominic Manchee @dpmanchee.bsky.social · 19/02/2025
A new study highlights the rising risks of sliding slopes in High Mountain Asia nsidc.org/news-analyse... Supplementing the research paper, the researchers released a new dataset, the 'High Mountain Asia Daily 5km Landslide HazaAccrd Indicator'. @davepetley.bsky.social @richardthomasw.bsky.social
nsidc.org
Rising risks of sliding slopes in High Mountain Asia
A new study has predicted an increase in landslide hazards in High Mountain Asia. The study authors linked higher emissions of greenhouse gases to the potential for higher risks from landslides.
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Richard Walker @richardthomasw.bsky.social · 19/02/2025
Many thanks for the link @dpmanchee.bsky.social
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Richard Walker @richardthomasw.bsky.social · 13/02/2025
We wrote a recent paper on the potential source of this earthquake, based upon paleoseismic trenching - see agupubs.onlinelibrary.wiley.com/doi/full/10....
agupubs.onlinelibrary.wiley.com
Surface Rupturing Earthquakes of the Greater Caucasus Frontal Thrusts, Azerbaijan
Two paleoseismic trenches near Goychay and Agsu, Azerbaijan provide evidence of at least three surface rupturing events Events occurred 334–118 BC, AD 1713–1895, and AD 1872–2003. The latter two ...
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Yann Klinger @yklinger.bsky.social · 11/01/2025
Beautiful 3D view of the surface rupture from the last event in Southern Tibet 1.95.66.59/t/3b94a72379...
1.95.66.59
西藏定日6.8级地震地表破裂带
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José R. Ribeiro @joserodribeiro.bsky.social · 16/12/2024
16 December 1902 5:07 UT M6.4 earthquake, near Andijan, Uzbekistan, near border with Kyrgyzstan, destroyed entire villages, killing 4722 people. Destructive aftershocks for two days. ngdc.noaa.gov/hazel/view/h... caiag.kg/en/projects/... nyshistoricnewspapers.org trove.nla.gov.au/newspaper/
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Richard Walker @richardthomasw.bsky.social · 13/12/2024
The 'Get it in 10' podcast series is aimed at high school students, featuring scientists talking about their work. I recorded one on continental collisions, which you can find here, thanks Harri for the invite! @oxuniearthsci.bsky.social @uk-comet.bsky.social open.spotify.com/episode/0L0j...
open.spotify.com
S2E4 The collision boundary
Get it in 10 · Episode
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Richard Walker @richardthomasw.bsky.social · 12/12/2024
My first post on here. A view of folded basin sediments viewed across the waters of the Toktogul reservoir, #Kyrgyzstan. I am going to start putting on news, field photos, updates relating to #earthquake research with a central Asia focus.
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