Reposted by Sumiko TsukamotoLuca Malatesta @geoluca.bsky.social · 14/11/2025On Noto Peninsula where coseismic uplift was ~2m. Sequence pre-earthquake, EQ +3 months, EQ +23 months. I thought we would be able to monitor this nice flat surface for weathering efficiency over the years… 1183
Reposted by Sumiko TsukamotoNorbert Marwan @pucicu.de · 06/12/2024Too old, too dirty, to unradiogenic? Can’t use your #speleothem? Don’t despair! ITL dating is here to help you out! www.sciencedirect.com/science/arti... @speleoseb.bsky.social @sumikotsuka.bsky.socialsciencedirect.comIsothermal thermoluminescence dating of speleothem growth – A case study from Bleßberg cave 2, GermanySpeleothems are a key archive of past climatic and environmental changes. 230Th/U dating is the most commonly used method to determine speleothem ages… 031
Reposted by Sumiko TsukamotoLuca Malatesta @geoluca.bsky.social · 05/12/2024Our work on surface deformation by the Noto Earthquake is finally out! Fukushima Yo led a team to create and ground-truth a full 3D deformation field from InSAR on the entire Peninsula. We show that repetition of similar quakes explains the 1st-order landscape features. 1/5 doi.org/10.1126/scia...doi.orgLandscape changes caused by the 2024 Noto Peninsula earthquake in JapanDeformation due to the Noto Peninsula earthquake showed that its repetition shaped the Peninsula’s modern landscapes. 2307
Reposted by Sumiko TsukamotoLuca Malatesta @geoluca.bsky.social · 14/11/2024A recurring question for us: Where do beach cobbles come from? Here a cool answer on a ~340ka terrace that shows strath & sed cover: (Salt?) weathering of volcaniclastics frees clasts when it was a coastal (intertidal?) platform. Strongest survive & make up sediment. Or so we think. 041
Reposted by Sumiko TsukamotoLuca Malatesta @geoluca.bsky.social · 01/11/2024Some context for the 🇯🇵 pictures I am posting. @sumikotsuka.bsky.social & I are working on Sado Island and Noto Peninsula since '23 for the DFG project TEMARI. Both sites face 🌊 on 1 side, are tectonically active (Noto EQ), & have many many marine terraces *What controls the creation of terraces? 071
Reposted by Sumiko TsukamotoNorbert Marwan @pucicu.de · 01/10/2024We have shown that thermoluminescence dating can provide reliable age estimates for particularly old speleothems: (open access) www.sciencedirect.com/science/arti... short summary at bbh.pik-potsdam.de/en/thermolum...sciencedirect.comIsothermal thermoluminescence dating of speleothem growth – A case study from Bleßberg cave 2, GermanySpeleothems are a key archive of past climatic and environmental changes. 230Th/U dating is the most commonly used method to determine speleothem ages… 011
Reposted by Sumiko TsukamotoSeb Breitenbach @speleoseb.bsky.social · 29/09/2024If you have dirty and seemingly ’undatable‘ speleothem samples in your lab - look no further! Isothermal Thermoluminescence (ITL) dating can help you ! Look at our latest study led by Junjie Zhang & Sumiko Tsukamoto of #LIAG and #TuebingenUni : eur02.safelinks.protection.outlook.com?url=https%3A...eur02.safelinks.protection.outlook.comRedirecting 043
Reposted by Sumiko TsukamotoLuca Malatesta @geoluca.bsky.social · 04/03/2024We were able to reach the same spot on the north coast of Noto Peninsula where I took pictures last November. That was before the earthquake and the ~1.7m of uplift it caused at this location. Before/after below 0185
Reposted by Sumiko TsukamotoLuca Malatesta @geoluca.bsky.social · 03/03/2024As a result of liquefaction, we see manholes shooting up across the pavement. At first I thought it was the land sinking around fixed water pipes, but it seems that they do actually move up. Is it a matter of buoyancy? They're mostly empty after all. Does someone here know? 112
Reposted by Sumiko TsukamotoLuca Malatesta @geoluca.bsky.social · 02/03/2024Back in Noto Peninsula 🇯🇵 for a post earthquake survey. Here you see a bay near Monzenmachi, we measured 4.4m of coseismic uplift. The white rocks are covered by organisms that lived in the sea, now perennially emerged. Note the now dry harbor on the right. 0359
