@MITgeomorph profile picture
The Perron Group at MIT @MITgeomorph

We study the processes that shape landscapes on Earth and other planets.

Joined January 2013
  • Tweets 90
  • Following 4
  • Followers 1,690
29 Photos and videos
MIT scientists measure river flow rates on Mars and Titan, Saturn’s largest moon bostonglobe.com/2023/08/08/m… via @BostonGlobe

MIT scientists measure river flow rates on Mars and Titan, Saturn’s largest moon - The Boston Globe

Geologists at the Massachusetts Institute of Technology have developed a technique that allows scientists to see how fast rivers flowed on Mars billions of years ago and currently do on Titan,...

bostonglobe.com
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The Perron Group at MIT retweeted
Julia Carr @jcarrRockstar
24 Jul 2023
Working at the intersection between surface processes and biology? Please submit to our #AGU23 session on Ecogeomorphology, with invited speakers Xiaoli Dong and Eyal Marder @VendittiLab @MITgeomorph LINK: agu.confex.com/agu/fm23/prel…
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The backstory on Sam's paper from @MIT @ScienceMIT
Massachusetts Institute of Technology (MIT)
 @MIT
11 Jul 2023
A new technique uses remote images to gauge the strength of ancient and active rivers beyond Earth. The approach allows geologists to see how intensely rivers once flowed on Mars, and how they currently flow on Titan, which is Saturn’s largest moon. mitsha.re/B5z150P8KW8
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Story by @isaac_schultz_ for @Gizmodo gizmodo.com/lifespans-rivers…

Lifespans of Rivers Revealed on Titan and Ancient Mars

Space imagery is revealing water and methane rivers past and present.

gizmodo.com
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New in @PNASNews: Sam Birch estimates river flow and sediment transport rates on ancient Mars and present-day Titan using only channel width and slope. doi.org/10.1073/pnas.2206837…
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The Perron Group at MIT retweeted
MIT Science @ScienceMIT
5 Jun 2023
"If we can understand the geologic factors that contribute to biodiversity, we can do a better job of conserving it," says @eapsMIT professor Taylor Perron news.mit.edu/2023/river-eros…

River erosion can shape fish evolution, study suggests

An MIT study of the freshwater greenfin darter fish suggests river erosion can be a driver of biodiversity in tectonically inactive regions.

news.mit.edu
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New in @sciencemagazine: Maya Stokes shows how rivers eroding through different types of rocks help explain high freshwater biodiversity in old mountain ranges like the Appalachians. With @TJNear @DaeminKim3 @TVAnews doi.org/10.1126/science.add9…
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6/7 The order in which fish populations would have been isolated by this geological mechanism matches the order implied by genetic data.
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7/7 This mechanism could have increased freshwater biodiversity elsewhere in the Appalachians, and in other ancient mountain ranges. A collaboration with @TJNear @DaeminKim3 @TVAnews @hybridActinop @BenavidBolivia @juliawood527 @yalepeabody @eapsmit doi.org/10.1126/science.add9…

Erosion of heterogeneous rock drives diversification of Appalachian fishes

Mountain erosion through different rock types drove divergence between lineages of an endemic fish species, the greenfin darter.

science.org
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The backstory from @MIT @ScienceMIT news.mit.edu/2023/river-eros…

River erosion can shape fish evolution, study suggests

An MIT study of the freshwater greenfin darter fish suggests river erosion can be a driver of biodiversity in tectonically inactive regions.

news.mit.edu
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Sediment transport rate depends on how many grains are in motion and how fast they are moving. Santiago Benavides @s_j_benavides shows that when bedload flux is on-off intermittent (punctuated by rare, large bursts), it's because of the "how fast" part. doi.org/10.1029/2022GL101919
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Mrs. @MITgeomorph, a.k.a. @LisaVPerron, has been busy writing books for children. Her debut, out today, has some beautiful landscapes and other charismatic patterns from the natural sciences. More info and ordering options here: lisaperronbooks.com/books/#p…
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The Perron Group at MIT retweeted
AGU's Eos @AGU_Eos
23 Feb 2023
Flowing sediment shapes landscapes. New research by @EricDealFluvial and others helps scientists better predict the process. Comments from Christophe Ancey @EPFL, story by @ClarissaWrights  eos.org/articles/decoding-th…

Decoding the Secrets of Shifting Sediments - Eos

In the small-scale details of grain shape, researchers have found a new way to understand how sediment flows in a river, a process shaping Earth’s landscapes.

eos.org
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News story by @MIT: news.mit.edu/2023/grain-flow…

Moving water and earth

An MIT team developed a more accurate formula to calculate how much sediment a fluid can push across a granular bed, which could help engineers manage river restoration and coastal erosion. The key...

news.mit.edu
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This week in @Nature, @EricDealFluvial shows how grain shape matters in sediment transport. Work with Ken Kamrin, @VendittiLab, @s_j_benavides. nature.com/articles/s41586-0…
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Here is a link that will let you read the paper without a subscription: rdcu.be/c3fht
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Our paper about grain shape is featured on the cover of @Nature. Led by @EricDealFluvial, with @VendittiLab, @s_j_benavides, @RiverProfile, Ken Kamrin & Qiong Zhang. nature.com/nature/volumes/61…
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