Results 121 to 130 of about 131,619 (292)

Learning Across the Divide: Understanding Knowledge Sharing Through Petrographic Analysis on Ceramics From the Rhine‐Meuse Delta During the Middle to Late Neolithic Transition (3400–2200 bce)

Archaeometry, EarlyView.
ABSTRACT Vlaardingen (VL) communities on the Dutch West coast (3400–2200 bce) are part of a unique, long‐term continuity in the European Neolithic. Despite large‐scale changes in European populations during the Neolithic, the genomic diversity and cultural practices of VL communities can be retraced to the Mesolithic.
Jisca de Bruin, Erik Kroon, Lasse van den Dikkenberg, Dennis Braekmans   +3 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

Technologies of Transition: Pottery Production and Specialization in Early Rome and Its Neighbors. Neutron Activation Analysis of Regional Assemblages and a Mineralogical‐Petrographic Study of Impasto Chiaro‐Sabbioso

Archaeometry, EarlyView.
ABSTRACT The following paper investigates ceramic production and signs of specialization in Rome and the wider region during the early first millennium bce, through an archaeometric approach using Instrumental Neutron Activation Analysis (NAA), and complementary techniques.
Mattia D'Acri, Maria Verde, Alberto De Bonis, Vincenzo Morra, Brandi L. MacDonald   +4 more
wiley   +1 more source

Ice mass discharge through the Antarctic subglacial hydrographic network as a trigger for cryoseismicity

Journal of Glaciology
We analyse seismic time series collected during experimental campaigns in the area of the David Glacier, Victoria Land, Antarctica, between 2003 and 2016.
Stefania Danesi, Simone Salimbeni, Alessandra Borghi, Stefano Urbini, Achille Zirizzotti, Massimo Frezzotti   +5 more
doaj   +1 more source

Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress [PDF]

, 2009
Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat.
Scott, J. B. T., Vaughan, D G, Bingham, R. G., R. G. Bingham, Pritchard, H.D., Vaughan, D. G., Bingham, R.G., Pritchard, Hamish D., Scott, J.B.T., Smith, A. M., Vaughan, D.G., Pritchard, H. D., J. B. T. Scott, Gudmundsson, G H, Smith, A M, Pritchard, H D, Smith, A.M., Gudmundsson, G.H., D. G. Vaughan, Vaughan, David G., G. H. Gudmundsson, Scott, J B T, H. D. Pritchard, Bingham, R G, Gudmundsson, G. H., Gudmundsson, Hilmar, A. M. Smith, Bingham, Robert G.   +27 more
core   +2 more sources

An Uncommon Instance of Egyptian Blue in the “Pigmented Intonachino” of the Fishpond Wall Painting From the Roman Villa of Torre di Pordenone (Northeast Italy)

Archaeometry, EarlyView.
ABSTRACT The increasingly close integration of analytical techniques in the study of Greek and Roman wall paintings has shown that Egyptian blue was a common pigment, widely documented in the production of blue and greenish hues in ancient painted production.
Simone Dilaria, Clelia Sbrolli, Hilary Becker, Yotam Asscher, Anna De Zotti, Monica Salvadori   +5 more
wiley   +1 more source

Helheim 2006: Integrated Geophysical Observations of Glacier Flow

, 2006
During the summer field season, 2006, we undertook a pilot geophysical experiment at Helheim Glacier, East Greenland, in which we deployed a network of GPS instruments on and around the glacier to measure the ice deformation field as a function of time. The experiment was motivated by the discovery of a new class of earthquakes occurring at glaciers in
Nettles, M., Ahlstrøm, A., Elosegui, P., Hamilton, G., Kahn, S., Langer, M., Stearns, L., Stenseng, Lars; id_orcid 0000-0003-4690-4200, Davis, J., Rkström, G., Forsberg, René; id_orcid 0000-0002-7288-9545, Jørgensen, T., Larsen, T.   +12 more
openaire   +1 more source

Spectral roughness of glaciated bedrock geomorphic surfaces: Implications for glacier sliding [PDF]

, 2000
A microroughness meter (MRM) was used to measure the high-frequency roughness of a number of geomorphic surfaces in the forefield of Glacier de Tsanfleuron, Switzerland.
Martin J. Siegert, Danny McCarroll, Hubbard, B., McCarroll, D., Bryn Hubbard, Siegert, M. J.   +5 more
core   +1 more source

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

Boreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida, Jutta Winsemann, Malte Hoffmann, Tobias Lauer, Utz Böhner, Thomas Terberger   +5 more
wiley   +1 more source

Thickness of Ruth Glacier, Alaska, and depth of its Great Gorge from ice-penetrating radar and mass conservation

Journal of Glaciology
Ruth Glacier is situated in the Central Alaska Range, with the Don Sheldon Amphitheater comprising much of its broad accumulation area, directly adjacent to North America's tallest mountain, Denali.
Brandon S. Tober, Michael S. Christoffersen, John W. Holt, Martin Truffer, Christopher F. Larsen   +4 more
doaj   +1 more source