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#sediment

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💧🌏 Greg Cocks

New Research Aims To Better Predict And Understand Cascading Land Surface Hazards
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phys.org/news/2025-06-aims-cas <-- shared technical article
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doi.org/10.1126/science.adp9559 <-- shared paper
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# geomiorphmetry

Nina Davtian

Over the past few months, I went to two core #repositories to sample several #marine #sediment cores and meet some of my new #collaborators in person.
First, the LSCE (Laboratoire des Sciences du Climat et de l’Environnement UMR 8212) core repository in mid-April.
Second, the EPOC (Environnements et Paléoenvironnements Océaniques et Continentaux UMR 5805) core repository in early June.
Hopefully, these core repository visits would be the first of many!
#Science #ScienceMastodon #AcademicMastodon

Brad Rosenheim

Imbrication: overlapping of sediment layers, fish scales, roof tiles, etc.

After our intense afternoon thunderstorms here in Florida, the streets abound with evidence of the deluge. Even in a land as flat as a pancake, leaves serve as the sediment imbricated by the intense rain. They have a surface area to mass ratio that is likely higher than even most clay particles, and thus they can behave this way even with relatively low slope and flow velocity. Imbrication happens in unidirectional currents and the grains organize with their upstream end higher than their downstream edge. So, in the geologic record they show us direction of ancient flows. Although formed by different processes, ripples in actual sediment can also show us direction and magnitude of ancient unidirectional flows.

All pictures taken from an alley in my neighborhood after a dousing thunderstorm.

en.m.wikipedia.org/wiki/Imbric

#geology
#sediment
#sedimentology
#paleoclimatology

nationalparks

Redwood National and State Parks this weekend. Sediment is being redeposited in the coastal areas with waves and tides arranging and rearranging the deposits. Learn more about the park at nps.gov/redw/index.htm and more about the geology at npshistory.com/publications/re and #nps #nationalparks #ocean #publiclands #photography #landscapephotography #coast #pacific #redwood Image credit Kurt Angersbach / Westernlabs #waves #tide #geology #sediment

💧🌏 Greg Cocks

Hypereutrophication, Hydrogen Sulfide, And Environmental Injustices - Mechanisms And Knowledge Gaps At The Salton Sea
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doi.org/10.1029/2024GH001327
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[I have long been fascinated by this ‘accidental waterbody’, from its creation all the way through the extreme pollution issues as it evaporates – and the lithium under it – a heck of a history, culturally, demographically, hydrologically, contaminants, public health, agriculturally and so much more…]
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💧🌏 Greg Cocks

Seismometers Listening At Rivers To Measure Sediment Transport
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eos.org/editor-highlights/seis <-- shared technical article
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doi.org/10.1029/2022JF007000 <-- shared paper
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“Bedload sediment, transported throughout an alpine catchment by a flood, was remotely tracked in detail by analyzing the ground vibrations recorded by a network of 24 seismic sensors….
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