Mastodawn

Human Disturbances Dominated The Unprecedentedly High Frequency Of Yellow River Flood Over The Last Millennium
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https://doi.org/10.1126/sciadv.adf8576 <-- shared paper
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https://www.smithsonianmag.com/smart-news/3000-years-humans-alterations-chinas-yellow-river-created-catastrophic-situation-exists-today-180951815/ <-- shared technical article
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#humanimpacts #anthropogenic #water #hydrography #hydrology #flood #flooding #river #catchment #engineering #riverine #YellowRiver #China #climatechange #extremeweather #floodhazard #risk #hazard #history #historic #sediment #reconstruction #spatialanalysis #spatiotemporal #levee #breaches #Holocene #geologic #fluvial #sustainability #planning #management #watermanagement #stress #change #dating #radiocarbon #OSL #sampling #paleoflood #overtopping #slackwater #sedimentation #model #modeling #embankment #riverstage #dams

Isak Roalkvam May 1

RE: https://archaeo.social/@isakroa/109382327541900747

Came across this formulation in a fairly recent paper: "Formation of the site ended between cal AD 1325 and 1410 (note 68% CI dates are considered more probable)", in which they otherwise treat their dates very conscientiously, so I'm quote-boosting this old thread. This is problematic, right?
#radiocarbon

STOP OCCUPATION 🍉 S. Costa Mar 11

I'm here waiting for 18 new #radiocarbon dates (and other stable isotope data for human remains) like a child waiting for birthday presents #ArchaeologistsLife #BeforeModernTimes

STOP OCCUPATION 🍉 S. Costa Feb 21

Experimenting with colors ...

#Archeology #Radiocarbon #Python #OpenScience #Matplotlib #ClimateScience #Prehistory

Stefano Costa Feb 16

IOSACal 0.7

IOSACal 0.7 was released yesterday. Here is a quick summary of what’s new. One of the standard plots rendered in the latest IOSACal version. It looks exactly as before. This long cycle was mostly about documentation improvements and some maintenance tasks, the boring but essential work that keeps the project going. Version 0.7 is already available in PyPI and conda-forge. There is an updated version record at Zenodo. All changes were contributed by Stefano Costa. Documentation […]

https://steko.iosa.it/2026/02/16/iosacal-0-7/

💧🌏 Greg Cocks Feb 11

Late Quaternary Variations in the Level of Paleo-Lake Malheur, Eastern Oregon
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https://doi.org/10.1006/qres.1998.2005 <-- shared paper
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https://www.oregonencyclopedia.org/articles/pleistocene-pluvial-lakes/ <-- shared technical article, “Pleistocene Pluvial Lakes” [OR]
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https://en.wikipedia.org/wiki/Malheur_Lake <-- shared Wikipedia page
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#EasternOregon #water #hydrology #geology #surfacewater #paleolake #LakeMalheur #Oregon #SouthernOregon #USA #endorheicbasin #endorheic #quaternary #fluvial #pluvial #fluvial #lacustrine ##Quaternary #Pleistocene #Holocene #PaleoLake #sediment #sedimentary #beaches #gravel #geology #sedimentology #tephra #volcanism #spatialanalysis #spatiotemporal #geologichistory #spatial #mapping #sampling #stratigraphy #dating #radiocarbon #chronology

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Joe Roe Jan 26

@jens2go @ClemensSchmid Unfortunately I have to agree with the reviewers (cool that these are open!) that the chronological modelling in this paper does not support the claims it makes.

In particular, the headline that the structures were "used for up to 429 years" conflates the uncertainty of the #radiocarbon dates with the occupation span of the site.

In reality the radiocarbon data offers no evidence of long-lived occupation (and hence domesticity); it just doesn't rule it out.

Anthropology.net Jan 23

New research refines marine radiocarbon corrections for Magdalenian Spain, showing that different shell species age differently. The result is a sharper timeline for coastal Ice Age life and cave occupations. #Radiocarbon #Paleolithic #Archaeology #HumanEvolution https://www.anthropology.net/p/when-shellfish-skew-the-clock

When Shellfish Skew the Clock

How fine-tuning marine radiocarbon corrections is reshaping the timeline of Ice Age coastal life in northern Spain

Anthropology.net

Joe Roe Jan 13

I'm starting #DigiArchMaintainathon today, working further with @jfy133 and @ddj-sa.bsky.social on a new standard for reporting #radiocarbon dates: https://github.com/MIxS-MInAS/miaard/

GitHub - MIxS-MInAS/miaard: Minimum Information about a Radiocarbon Date

Minimum Information about a Radiocarbon Date . Contribute to MIxS-MInAS/miaard development by creating an account on GitHub.

GitHub

Emiliano Monroy Ríos Dec 11

Este pedacito de carbón vegetal, así como lo ven, tiene entre 9,700 y 8,500 años de antigüedad. Vamos a develar el misterio. #karst #history #radiocarbon