Results 71 to 80 of about 616 (247)

Spring-water temperature suggests widespread occurrence of Alpine permafrost in pseudo-relict rock glaciers [PDF]

The Cryosphere
Runoff originating from ground ice contained in rock glaciers represents a significant water supply for lowlands. Pseudo-relict rock glaciers contain patchy permafrost but appear to be relict, and therefore they can be misinterpreted when using standard ...
L. Carturan, G. Zuecco, G. Zuecco, A. Andreotti, J. Boaga, C. Morino, M. Pavoni, R. Seppi, M. Tolotti, T. Zanoner, M. Zumiani   +10 more
doaj   +1 more source

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

Archaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather, Matthias Leopold, Kaitlin Sullivan, Kane Ditchfield, Tom Horrocks, Luke Gliganic, Emma Beckett, Diana Patalwala, Emielda Yusiharni, Michael Smirk, William Hiscock, Jo McDonald   +11 more
wiley   +1 more source

Biometric Analysis of Giant and Large Murid Remains From Matja Kuru 2, Timor‐Leste

Archaeometry, EarlyView.
ABSTRACT Published research on Matja Kuru 2 (MK2) demonstrates its significance for understanding human lifestyle during the terminal Pleistocene and Holocene. Murids represent the most commonly identified taxa in the site, with specimens preliminarily classified as small, large and giant based on size comparisons.
Sarah Hannan, Sofia C. Samper Carro, Sue O'Connor   +2 more
wiley   +1 more source

Ice sheet attenuation from radar sounding in the frequency domain

Journal of Glaciology
Attenuation rates inferred from radar sounding offer one of the few ways to observationally constrain the large-scale temperature structure of ice sheets.
Eliza J Dawson, Wing (Winnie) Chu, Michael Christoffersen, Donglai Yang, Stuart Farris, Joseph A MacGregor   +5 more
doaj   +1 more source

Glacier thickness modelling and monitoring with geophysical data constraints: A case study on the Indren Glacier (NW Italy)

Earth Surface Processes and Landforms
AbstractThe ongoing global temperature increase has accelerated the mass loss of glaciers worldwide, with Italian alpine glaciers being particularly vulnerable due to their small size, complex geometries and exposition that implies a fast reaction to thermal and hydrological modifications.
Strallo, Valeria, Colombero, Chiara, Troilo, Fabrizio, Mondardini, Luca, Godio, Alberto   +4 more
openaire   +2 more sources

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Gravity modelling of ice thickness and valley geometry on Taku Glacier (T'aak̲ú K̲wáan Sít'i), Alaska

Journal of Glaciology
Taku Glacier recently began retreating for the first time since the late 19th century but limited observations of its bed leaves uncertainties on how this retreat will proceed. In this study, we use ground-based gravity measurements to improve the extent
Louise Borthwick, Atsuhiro Muto, Kirsty Tinto   +2 more
doaj   +1 more source

Ice thickness measurements of Guliya ice cap, western Kunlun Mountains (Tibetan Plateau), China

Journal of Glaciology, 2018
Despite their high value and importance for various glaciological applications, detailed ice thickness measurements of alpine glaciers are still very limited. Knowledge of bedrock topography is essential for paleoglaciological studies. The Guliya ice cap
STANISLAV KUTUZOV, LONNIE G. THOMPSON, IVAN LAVRENTIEV, LIDE TIAN   +3 more
doaj   +1 more source

Application of Multi‐Method Dating for Understanding the Gravettian North of Moravia, Central Europe

Archaeometry, EarlyView.
ABSTRACT This article presents the results of integrating three methods to assess the age of the Upper Palaeolithic site of Pietraszyn 11 (SW Poland), close to the Moravian Gate. Sediment chronology determined using optically stimulated luminescence produced promising, yet ambiguous results (51.0 ± 3.7 to 20.3 ± 0.7 ka).
A. Wiśniewski, B. Bujalska, D. Popović, M. Baca, K. Zarzecka‐Szubińska, A. Lemanik, M. Hein, S. Talamo, P. Moska, H. Fewlass, D. Tokarz, Z. Jary, B. Przybylski, D. Bobak, M. Połtowicz‐Bobak, K. Wertz, A. Nadachowski   +16 more
wiley   +1 more source

Glacier bed surveying with helicopter-borne dual-polarization ground-penetrating radar

Journal of Glaciology, 2019
Traditionally, helicopter-borne ground-penetrating radar (GPR) systems are operated with a single pair of bistatic dipole antennas to measure the thickness of glaciers.
LISBETH LANGHAMMER, LASSE RABENSTEIN, LINO SCHMID, ANDREAS BAUDER, MELCHIOR GRAB, PHILIPP SCHAER, HANSRUEDI MAURER   +6 more
doaj   +1 more source