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GregCocks · @GregCocks
609 followers · 553 posts · Server techhub.social
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A New, Underground Atlas Of Subduction Zones [EOS]
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eos.org/articles/a-new-undergr <-- shared technical article
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submap.gm.umontpellier.fr/ <-- Submap, a tool for mapping subduction zones
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“Graphic design meets geoscience…
Submap is a user-friendly tool that allows anyone with an Internet connection to create quick, custom maps of subduction zones…"

#gis #spatial #mapping #visual #visualisation #visualization #subduction #geology #structuralgeology #submap #geoscience #global #earth #platetectonics #subductionzones #earthquake #model #modeling #3dmapping #3dmodeling #opensource #opendata #tsunami #monitoring #fault #faulting #visualizationtools #Maps #crosssections

Last updated 1 year ago
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GregCocks · @GregCocks
598 followers · 535 posts · Server techhub.social
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#gis #spatial #mapping #remotesensing #uplift #himalayas #tibet #model #modeling #research #sampling #hydrothermal #oxygenisotopes #india #eurasia #mountains #geology #structuralgeology #tibetanplateau #palaeoaltimetry #palaeoelevation #geodynamic #palaeoclimate #gangdesearc #subduction #lithosphere #continentalcollision

Last updated 1 year ago
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kipuka · @kipuka
9 followers · 52 posts · Server social.sciences.re
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8/ Et pour terminer, on répond à la suivante : pourquoi n’y a t’il pas de volcans dans certaines régions des  ? Il suffit en effet de jeter un œil à la carte ci-dessous (CC BY-SA Eric Gaba, modifiée) pour voir des discontinuités dans le volcanisme de la chaîne andine, découpée en plusieurs segments. Résoudre ce mystère est aussi l’occasion de revenir sur les mécanismes qui régissent la d’une plaque océanique sous une plaque continentale…

#question #andes #subduction

Last updated 1 year ago
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GregCocks · @GregCocks
297 followers · 386 posts · Server techhub.social
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#gis #spatial #mapping #formation #mechanical #data #geology #structuralgeology #platetectonics #subduction #tectonics #lithosphere #model #modeling #borneo #magmatism #topography #uplift #malysia #spatialanalysis #remotesensing #seismology #seismic #geophysics #gravity #gravational #volcanic #vulcanism #arc #simulation #simulations #crust #mantle #continent #orogeny

Last updated 1 year ago
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Howard Lee · @hlee
92 followers · 202 posts · Server sciencemastodon.com

A different kind of breakup story - the upper mantle weeps giant tears of rock when subduction ends 😥 stressing everything around it 👇 nature.com/articles/s41561-023

#platetectonics #subduction #lithosphericdrip

Last updated 1 year ago
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yeti · @yeti
77 followers · 146 posts · Server emacs.ch

#frasercain #michaelway #atmosphere #biosignature #davinci #exoplanet #habitable #interview #phosphene #subduction #surface #venus #veritas

Last updated 1 year ago
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Richard Ott · @GeoRichard
103 followers · 43 posts · Server fediscience.org
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RT @CailCon
zone scientists: ever wonder what that fault you study looks like? This is the subduction interface at ~30 km depths (but now at the surface, thanks exhumation). 📍Catalina Island/Pimu CA @sz4d

#NSFfunded #subduction

Last updated 1 year ago
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InformactionsMC · @MarieClaudeS
132 followers · 3346 posts · Server mastodon.top
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futura sciences

La terre n’en finit plus de trembler en Turquie le long de cette faille

mcinformactions.net/La-terre-n

#subduction #tremblements_de_terre

Last updated 2 years ago
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Robin Lacassin · @RobinLacassin
375 followers · 170 posts · Server qoto.org
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I am totally astounded by what I read when I compare these two texts: Maria Graham's description of the coastal due to the 1822 , versus Charles Darwin's text on very similar phenomena related to the 1835 earthquake.

Read carefully, paying attention to the expressions used. It's like if borrowed Maria Graham's words, but also her interpretation about the accumulation of earthquakes raising the coast on the long term. 🤔
Any comment ?

Both 1822 and 1835 earthquakes happened in Central on the between Nazca and South America . Darwin's description, based on Fitz Roy (Beagle's captain) observations, is considered as seminal.

Thanks @haq for pointing me to the work by Maria Graham.

#uplift #valparaiso #concepción #darwin #chile #subduction #tectonic_plates #earthquake #megathrust

Last updated 2 years ago
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le Pido Crocite · @geomant
57 followers · 276 posts · Server norden.social

Now here's the fun part: On the ocean floor, seawater is incorporated into minerals of the sediments and shit (literally shit). It becomes one building block of the s.

The oceanfloor on the other hand isn't a static thing. It's constantly being driven around by . And after 100Mio years or another, it is usually roadkilled by another tectonic plate that is younger, hotter and lighter (like your mom) in a proces called .

#crystal #lattice #platetectonics #subduction

Last updated 2 years ago
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Robin Lacassin · @RobinLacassin
358 followers · 163 posts · Server qoto.org
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New paper published: A contribution to the quantification of crustal shortening and kinematics of deformation across the Western ( ∼ 20–22° S), Habel et al., Solid Earth, 2023

se.copernicus.org/articles/14/ (open access)

#andes #tectonics #orogen #subduction #atacama #altiplano

Last updated 2 years ago
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Robin Lacassin · @RobinLacassin
316 followers · 147 posts · Server qoto.org
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USGS got very similar mechanism, but puts hypocenter deeper (around 20km). This perhaps means that the rupture happened in the Gorda tectonic plate beneath the upper N American plate. The small Gorda plate is plunging under N America along the zone.

#subduction #earthquake #cascadia

Last updated 2 years ago
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Mark · @zl2tod
29 followers · 66 posts · Server mastodon.nz

Using seafloor geodesy to detect vertical deformation at the Hikurangi subduction zone: Insights from self-calibrating pressure sensors and ocean general circulation models

agupubs.onlinelibrary.wiley.co

#slowslip #earthquake #subduction #peerreviewed #preprint

Last updated 2 years ago
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Mark · @zl2tod
29 followers · 65 posts · Server mastodon.nz

NZ’s silent quakes: Scientists capture mysterious ‘slow-slip’ event off Hawke’s Bay coast
Scientists have edged closer to understanding mysterious “silent” earthquakes, after capturing a recent event that raised part of Hawke’s Bay’s seafloor by several centimetres.

nzherald.co.nz/nz/nzs-silent-q

#slowslip #earthquake #tectonics #subduction #Geonet

Last updated 2 years ago
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Alan Baxter · @microplates
5 followers · 6 posts · Server mstdn.party

Hi everyone, I am geologist working on better understanding the processes that control arc-back-arc systems. Currently focused on the SW Pacific, from PNG to New Zealand! -arcbasins

#microplates #back #tectonics #subduction #sedimentation #stratigraphy

Last updated 2 years ago
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Jascha Polet · @jascha
396 followers · 67 posts · Server mastodon.social
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Unexpected focal mechanism for M7.0 earthquake near Islands. I would have expected a shallow thrust on the interface, but it appear to be a steep event. As of yet, only possible waves on the nearby Honiara sea level station are a few cms in amplitude.

#solomon #earthquake #subduction #normal #faulting #tsunami

Last updated 2 years ago
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Robin Lacassin · @RobinLacassin
148 followers · 53 posts · Server qoto.org

This recalls that even in contexts like or , where the may produce very big , much smaller shallow crustal ruptures may present significant hazards because closer to towns.
2/2

#earthquakes #megathrust #java #sumatra #subduction

Last updated 2 years ago
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Jascha Polet · @jascha
312 followers · 57 posts · Server mastodon.social
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Today’s M6.9 shallow (approximate location as purple blob) in the context of the areas of (numerous) previous events near on a map from Putra et al. (2016)

#megathrust #earthquake #rupture #subduction #sumatra

Last updated 2 years ago
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Robin Lacassin · @RobinLacassin
82 followers · 33 posts · Server qoto.org
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A magnitude Mw6.9 offshore south-central .

Mechanism and location suggest rupture on the shallow part of the close to the trench (on the very shallow dipping fault plane). However, modelled depth of ~19km, if true, seems little too deep given the closeness with the trench (USGS gives same depth and mechanism). This means that we cannot exclude a rupture on the steep fault plane within the oceanic plate.

Map with source time function from Geoscope IPGP
geoscope.ipgp.fr/index.php/en/
Larger map with epicenter of this event in red from USGS (both not yet on fediverse it seems)

#subduction #earthquake #sumatra #megathrust

Last updated 2 years ago
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Raphael Grandin · @RaphaelGrandin
104 followers · 103 posts · Server social.linux.pizza
Mastodon - Jascha Polet (@jascha@mastodon.social)

Very comprehensive cross-sectional view of seismicity along and around the interface in this post by @jascha mastodon.social/@jascha/109326

#subduction #tonga

Last updated 2 years ago
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