Results 21 to 30 of about 11,274 (202)

High resolution digital 3D modelling of subsurface morphological structures of Koutouki Cave, Greece

Acta Carsologica, 2020
Remote sensing techniques and laser scanning technology have given us the opportunity to study indoor environments, such as caves, with their complex and unique morphology.
Aliki Konsolaki, Emmanuel Vassilakis, Leonidas Gouliotis, Georgios Kontostavlos, Vassilis Giannopoulos   +4 more
doaj   +1 more source

Characterization and Correction of Evaporative Artifacts in Speleothem Fluid Inclusion Isotope Analyses as Applied to a Stalagmite From Borneo

Geochemistry, Geophysics, Geosystems, 2023
Fluid inclusion water isotope measurements in speleothems have great potential for paleoclimate studies as they enable the reconstruction of precipitation dynamics and land temperatures.
A. Fernandez, M. H. Løland, J. Maccali, Y. Krüger, H. B. Vonhof, H. Sodemann, A. N. Meckler   +6 more
doaj   +1 more source

Estimating the upper limit of prehistoric peak ground acceleration using an in situ, intact and vulnerable stalagmite from Plavecka priepast cave (Detrekoi-zsomboly), Little Carpathians, Slovakia-first results [PDF]

, 2017
Earthquakes hit urban centres in Europe infrequently, but occasionally with disastrous effects. Obtaining an unbiased view of seismic hazard (and risk) is therefore very important.
Bednárik, Marián, Bokelmann, G., Brimich, L., Edwards, R. L., Gribovszki, K., Konečný, Pavel, Kovacs, K., Lednická, Markéta, Moseley, G., Mónus, P., Spötl, C., Tóth, L.   +11 more
core   +1 more source

Говийн aгуйн спелеотемын судалгааны үр дүн ба эртний уур амьсгал

Proceedings of the Mongolian Academy of Sciences, 2017
No Mongolian AbstractSpeleothems have been found out in three caves: the Shar-khanan , Gurvan-Zeerd and Lovon-Chombo. Were dated by U-Th method. No speleothem deposition younger than 550 ky was found in the Gobi .
Авирмэд Э, Антон Вакс, А В Осинцев   +2 more
doaj   +1 more source

Bubble trail and folia in cenote Zapote, Mexico: petrographic evidence for abiotic precipitation driven by CO2 degassing below the water table

International Journal of Speleology, 2020
Folia are speleothems that resemble bells, inverted cups, or bracket fungi, and whose origins are still controversial. Cenote Zapote (an underwater cave) in the Yucatán Peninsula (México), is home to some of the largest folia reported to date.
Rafael López-Martínez, Fernando Gázquez, José M. Calaforra, Philippe Audra, Jean Y. Bigot, Teresa Pi Puig, Rocío J. Alcántara-Hernández, Ángel Navarro, Philippe Crochet, Liliana Corona Martínez, Raquel Daza Brunet   +10 more
doaj   +1 more source

Bunker Cave stalagmites: an archive for central European Holocene climate variability [PDF]

, 2012
Holocene climate was characterised by variability on multi-centennial to multi-decadal time scales. In central Europe, these fluctuations were most pronounced during winter. Here we present a record of past winter climate variability for the last 10.8 ka
Fohlmeister, Jens, Gerdes, Axel, Immenhauser, Adrian, Mangini, Augusto, Mudelsee, Manfred, Richter, Detlev K., Riechelmann, Dana F. C., Riechelmann, Sylvia, Scholz, Denis, Schröder-Ritzrau, Andrea, Spötl, Christoph, Wackerbarth, Anne Katrin   +11 more
core   +2 more sources

Characterizing Stalagmites’ Eigenfrequencies by Combining In Situ Vibration Measurements and Finite Element Modeling Based on 3D Scans

Geosciences, 2020
Broken or deformed speleothems have been used as indicators of paleo-earthquakes since the 1990s; however, a causal link is difficult to prove except for some thin speleothems.
Aurélie Martin, Thomas Lecocq, Klaus-G. Hinzen, Thierry Camelbeeck, Yves Quinif, Nathalie Fagel   +5 more
doaj   +1 more source

Ventilation and cave air PCO2 in the Bunker-Emst Cave System (NW Germany): implications for speleothem proxy data [PDF]

, 2019
Cave air pCO2 (carbon dioxide partial pressure) is, along with drip rate, one of the most important factors controlling speleothem carbonate precipitation.
Breitenbach, Sebastian, Immenhauser, Adrian, Mangini, Augusto, Riechelmann, Sylvia, Schroder-Ritzrau, Andrea   +4 more
core   +2 more sources

Mg/Ca ratios in freshwater microbial carbonates: Thermodynamic, kinetic and vital effects [PDF]

, 2014
The ratio of magnesium to calcium (Mg/Ca) in carbonate minerals in an abiotic setting is conventionally assumed to be predominantly controlled by (Mg/Ca)solution and a temperature dependant partition coefficient. This temperature dependence suggests that
Greenway, G., Pedley, H.M., Rogerson, M., Saunders, P., Wadhawan, J.D.   +4 more
core   +2 more sources

Late Quaternary Climate Variability and Change from Aotearoa New Zealand Speleothems: Progress in Age Modelling, Oxygen Isotope Master Record Construction and Proxy-Model Comparisons

Quaternary, 2020
We re-evaluated speleothem isotope series from Aotearoa New Zealand that were recently contributed to the Speleothem Isotopes Synthesis and AnaLysis (SISAL) database.
Andrew M. Lorrey, Paul W. Williams, John-Mark Woolley, Nicolas C. Fauchereau, Adam Hartland, Helen Bostock, Shaun Eaves, Matthew S. Lachniet, James A. Renwick, Vidya Varma   +9 more
doaj   +1 more source