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Posts by Richard Walker

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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

2 months ago 16 13 0 0
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⚒️🧪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.

2 months ago 225 101 9 12
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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...

When paleoseismology becomes uncomfortable: a short fault scarp in a mature orogen.
By @speleojacek.bsky.social and Christoph
paleoseismicity.org/when-paleose...

3 months ago 8 2 1 0
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Extent, timing, and cause of Quaternary uplift along the Atlantic margin of Morocco Primary Supervisor: Richard Walker

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...

4 months ago 3 4 0 0
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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...

4 months ago 5 1 1 0

Very nice! @faultydata.bsky.social

4 months ago 1 0 0 0
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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...

4 months ago 2 1 0 0
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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

5 months ago 41 18 1 0
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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

5 months ago 284 142 13 28
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.

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.

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

7 months ago 4 2 0 1
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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.

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/...

7 months ago 6 1 0 1
Detailed Active Fault Map of the Spin Ghar Fault System and Related Seismicity in Eastern Afghanistan | τeκτoniκa

Link to the paper published in TEKTONIKA #DOAJ @wearetektonika.bsky.social 2/2 ⚒️

tektonika.online/index.php/ho...

7 months ago 6 1 0 0
Geological cross section across the Jalalabad basin shows several thrust faults dipping to the north-west

Geological cross section across the Jalalabad basin shows several thrust faults dipping to the north-west

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 ⚒️

7 months ago 18 9 1 0

Yes, completely. We were just passing through and had a short stop

8 months ago 1 0 0 0
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We happened to visit the rupture today, on their anniversary!

8 months ago 2 0 1 0
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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...

8 months ago 5 1 0 0

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

10 months ago 8 3 0 0
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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

10 months ago 631 372 18 51
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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. 💔

🧪⚒️

11 months ago 142 32 9 5
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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

11 months ago 3 1 0 0
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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

11 months ago 1 1 0 1
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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

11 months ago 1 1 0 0
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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 🌎

1 year ago 8 4 1 0
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The Mediterranean Sea wasn't always a sea
The Mediterranean Sea wasn't always a sea YouTube video by Hannah Fry

A short introduction to the Miocene paleogeography of #Almeria and the #Alboran sea by Hannah Fry ‘Geology is cool man..’

youtube.com/shorts/jt9Wv...

1 year ago 16 2 0 0
Earthquakes in North Africa: a reconnaissance of active faulting along the margins of the Atlas mountains of Morocco – Earthquakes in Central Asia

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...

1 year ago 1 1 0 0
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The team is now fully assembled for the Atlas mountains fieldtrip! Looking forward to seeing some faults tomorrow

1 year ago 10 1 0 0

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!

1 year ago 3 0 0 0
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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.

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

1 year ago 5 4 1 0

Many thanks for the link @dpmanchee.bsky.social

1 year ago 1 0 0 0
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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 ...

We wrote a recent paper on the potential source of this earthquake, based upon paleoseismic trenching - see agupubs.onlinelibrary.wiley.com/doi/full/10....

1 year ago 2 1 0 0