Lmst

Which implies a instantaneous change I'd be gladly corrected by #paleoclimatology #paleoextinction #paleologist , because I don't even have the level of a student in the domain, so it's probable I mistake For example, I don't remember about the fragmented asteroid theory: they were asteroidS

What if, when we stroll into California and feel at home, we're reminded not of any paradise of today, but rather Africa in the last ice age? The science, shockingly, checks out...

This post's featured image is Ice Age Earth, by Ittiz of Wikipedia (rotated by me).

#iceage #climate #paleoclimate #prehistory #paleoclimatology #science #glacialperiod #lastglacialmaximum

Marine Isotope Stage 13 (Paleogeography 🦕)

Marine Isotope Stage 13 or MIS 13 is a Marine isotope stage in the geologic temperature record, in Britain covering the Cromerian interglacial period between ~524,000 and 474,000 years ago. It is split into three substages, MIS 13a MIS 13b, and MIS 13c. Some records indicate that MIS 13a was an ...

https://en.wikipedia.org/wiki/Marine_Isotope_Stage_13

#MarineIsotopeStage13 #Glaciology #Interglacials #Paleogeography #Paleoceanography #Paleoclimatology

Offre de #thèse

Le ou la doctorant.e sera accueilli.e au au CEREGE (AMU – OSU Pytheas).
#AixEnProvence

Variabilité hydro-climatique et gestion de la ressource en eau en Méditerranée nord-occidentale (#Provence, SE France) : reconstitutions à partir d’archives carbonatées environnementales et archéologiques du #Pléistocène supérieur à l’époque actuelle.

https://afeq.hypotheses.org/7534

#Paleoclimatology
#geomorphology

A new study uses a stalagmite to reveal devastating, decade-long droughts that may have contributed to the Maya collapse. A deep dive into ancient climate. #Archaeology #Anthropology #MayanCivilization #ClimateChange #Paleoclimatology #Mayan #Maya #MesoAmerica https://www.anthropology.net/p/the-slow-drip-of-mayan-collapse

Kerala researcher heads to UK in search of essence of rain that fell 5.3 million yrs ago

Aashik Krishnan 13 August 2025, 07:56 AM IST Chaitanya Bhagavathiparambil, a native of Chevayur in Kozhikode, …
#NewsBeep #News #Headlines #ancientmonsoon #AndamanSea #climateresearch #England #IceAge #Keralaresearcher #Kozhikode #Latvia #LV #MalayaliWoman #microfossils #Monsoon #paleoclimatology #Pleistoceneepoch #Plioceneepoch #Research #SouthAsiamonsoon #UniversityofExeter
https://www.newsbeep.com/57267/

Great to see work by colleagues in the media! They are trying to understand the flood history of the Sydney basin, critical when the floodplain has become so heavily developed.

#Geomorphology #Paleoclimatology #palaeoclimatology #Flood #Sydney

https://www.smh.com.au/national/nsw/a-megaflood-devastated-early-sydney-an-even-worse-catastrophe-is-hidden-in-the-city-s-bathtub-20250721-p5mggu.html

Ocean Warming Threatens Even Resilient Caribbean Corals.-
A new study including researchers from Freie Universität Berlin @freieuniversitaet and recently published in “Nature Scientific Reports” shows that ocean warming and local stressors may be pushing Caribbean corals beyond their limits.
#siderastrea #martinique #corals #paleoclimatology #anthropogenic #impacts #pollution #overfishing
https://www.nature.com/articles/s41598-025-08709-5

@Silversnapples https://xkcd.com/1732/ but also:

do we know if there has been a change to these levels of heat, before the last ice age? if so, do we have records of the death tool in that period?

#paleontology #paleoclimatology

The West’s #Megadrought Might Not Let Up for Decades, Study Suggests
Not in 12 centuries has the region been so dry for so long. Clues from another dry spell 6,000 years ago are helping scientists understand what’s driving the latest one, and why it’s been so unrelenting. It seems to be the result of a pattern of #Pacific #Ocean temperatures that is “stuck” because of #globalwarming.
https://www.nytimes.com/2025/07/16/climate/southwest-megadrought.html
https://archive.ph/GdGhH
#drought #climatechange #paleoclimatology

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.

https://en.m.wikipedia.org/wiki/Imbrication_(sedimentology)

#geology
#sediment
#sedimentology
#paleoclimatology

Approximately 10 cm long, an elongate pile of dead brown leaves from live oaks. Picture taken with flash, this leaves are lit up to a point where imbrication is more difficult to see. Flow was from the left to the right and organization of the leaves with higher sides toward the left (upstream). In the foreground is black asphalt.

Taken without flash, lighting from down the alley shows the imbrication of self-arranged dead leaves. Flow was from left to right and here the leaves are almost vertical. Sand and gravel are in the background and black asphalt is in the foreground.

Leaf imbrications are not the only thing showing evidence of unidirectionally flowing water earlier in the evening. Here sediment ripples are seen in the sand and gravel in the alley. The ripples are asymmetric. The upstream aide of the ripples is less steep and grayish tan. The downstream side is steeper and the valleys between ripples are filled with black heavier grains. The ripples themselves appear to be imbricated as they climb over one another with the downstream end higher than the upstream end. However, it is a different process that forms these climbing ripples. In this photo, current was moving from the top right toward the bottom left.

Land-Sea Linkages In The Arctic – What Is Paleoclimatology?
--
https://www.usgs.gov/programs/ecosystems-land-change-science-program/science/land-sea-linkages-arctic <-- shared technical article
--
https://doi.org/10.1371/journal.pclm.0000333 <-- shared example of paper
--
https://doi.org/10.47894/mpal.69.3.04 <-- shared example of paper
--
[who doesn’t like a good foraminifera! (memories of staring down a microscope for hours at grad school) 😊 ]
#fedscience #Paleoclimatology #Paleoecology #Paleooceanography #Icesheet #climatechange #Paleoanthropology #Seaice #Marineecosystems #GIS #spatial #mapping #spatialanalysis #model #modeling #spatiotemporal #foraminifera #arctic #change #cryosphere #ArcticOcean #glacial #interglacial #Holocene #future

+++ Update to LANDO +++

Small update for a niche corner of science 🧪
I’ve made my linked age-depth modeling tool (LANDO) Docker-ready 🐳
That means no more dependency hell — just pull & run.
Supports rbacon, Bchron, clam, hamstr, Undatable.

🔗 https://github.com/GPawi/LANDO

#OpenScience #Paleoclimatology #ReproducibleResearch #Docker #Geochronology

Don Glaciation (Glaciology 🗻)

The Don Glaciation, also known as the Donian Glaciation and the Donian Stage, was the major glaciation of the East European Plain, 0.8–0.5 million years ago, during the Cromerian Stage of the Middle Pleistocene. It is correlated to Marine Isotope Stage 16, approximately 650,000 years ago, which globally contained one of the largest g...

https://en.wikipedia.org/wiki/Don_Glaciation

#DonGlaciation #IceAges #Glaciology #Pleistocene #GeologyOfEurope #Paleoclimatology

"The palaeoclimate record shouts out to us that, far from being self-stabilizing, the Earth's climatic system is an ornery beast which overreacts even to small nudges."

—Wallace Broecker, 1995, quoted in The Weather Makers by Tim Flannery

#climate #ClimateChange #paleoclimatology #paleontology #science #ClimateEmergency #ClimateCrisis

500-year-old Transylvanian diaries show how the Little Ice Age completely changed life and death in the region

Tapping into ‘society’s archive’, researchers have examined written sources from the 16th century that chronicle famine, excessive flooding, and plagues in what today is Romania

https://www.eurekalert.org/news-releases/1072144?#:~:text=https%3A//www.frontiersin.org/journals/climate/articles/10.3389/fclim.2024.1507143/full

#paleoclimatology #climatedata

The ‘society’s archive’ – contain reports and observations about local climates in bygone centuries. Credit: Gaceu et al., 2024.

New insights for #ClimateResearch: Synchronization of data on the eruption of the #LaacherSee #volcano / Central European Late Glacial #climate change in the Younger Dryas was not a consequence of the Laacher See eruption / Research of #MainzUniversity and @uniheidelberg 👉 https://press.uni-mainz.de/new-insights-for-climate-research-synchronization-of-data-on-the-eruption-of-the-laacher-see-volcano/

#geosciences #climatology #paleoclimatology #ClimateChange

#Halloween is soon and so is the beginning of a new #chapter of my #academic #career!
For this reason, I reintroduce one of my most significant first-authored #research articles (Davtian et al., 2021 #Paleoceanography and #Paleoclimatology):
https://doi.org/10.1029/2020PA004077
More details in the #thread below: (1/15)

#Science
#ScienceMastodon #AcademicMastodon
#Paper #Scientific #Publication
#PaleoClimate #ClimateChange
#ClimateProxies #SeaSurfaceTemperature
#NorthAtlantic #AtlanticOcean #Atlantic #Ocean

Header of the online article by Davtian et al. (2021) Paleoceanography and Paleoclimatology (https://doi.org/10.1029/2020PA004077) entitled "The Novel Hydroxylated Tetraether Index RI-OH′ as a Sea Surface Temperature Proxy for the 160-45 ka BP Period Off the Iberian Margin" and published as a green open access paper in the AGU journal Paleoceanography and Paleoclimatology. Screenshot taken by Nina Davtian (that's me!).

This week's #NewBooks at the library: The love for beautiful books continues with Children of #Dune from The Folio Society, and I offered sanctuary to two damaged books: Earth's Climate: Past and Future from W.H. Freeman and The Correspondence of #CharlesDarwin, Volume 23: 1875 from Cambridge University Press

#Paleoclimatology #ClimateChange #Evolution #HistoryOfScience #ScienceHistory #HistSci #Books #Bookstodon #Scicomm
#Books #Scicomm #Bookstodon

A photo of three books standing on a small, brown, wooden table. On the left, lying down, is The Correspondence of Charles Darwin, Volume 23: 1875; in the middle standing upright is Children of Dune from The Folio Society, showing a picture of a young boy and girl in fictional desert garb standing back to back looking away into the distance; on the right, lying down, is Earth's Climate: Past and Future from W.H. Freeman. The out-of-focus background shows several black bookcases filled with books and part of the laminate floor and, in the top-left corner, red drapes hanging from the door. Some overhead spotlights are turned on to give the whole a cozy atmosphere.

Marine Isotope Stage 13 (Glaciology 🗻)

Marine Isotope Stage 13 or MIS 13 is a Marine isotope stage in the geologic temperature record, in Britain covering the Cromerian interglacial period between ~524,000 and 474,000 years ago. It is split into three substages, MIS 13a MIS 13b, and MIS 13c. Some records indicate that MIS 13a was an unst...

https://en.wikipedia.org/wiki/Marine_Isotope_Stage_13

#MarineIsotopeStage13 #Glaciology #Interglacials #Paleogeography #Paleoceanography #Paleoclimatology

#paleoclimatology

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