Results 31 to 40 of about 1,251 (191)

Using cryptotephras to extend regional tephrochronologies: An example from southeast Alaska and implications for hazard assessment [PDF]

Quaternary Research, 2008
Cryptotephrochronology, the use of hidden, diminutive volcanic ash layers to date sediments, has rarely been applied outside western Europe but has the potential to improve the tephrochronology of other regions of the world. Here we present the first comprehensive cryptotephra study in Alaska.
Blackford, Jeffrey, Payne, Richard, van der Plicht, Johannes   +2 more
openaire   +2 more sources

An Age Scale for the First Shallow (Sub-)Antarctic Ice Core from Young Island, Northwest Ross Sea

Geosciences, 2021
The climate of the sub-Antarctic is important in understanding the environmental conditions of Antarctica and the Southern Ocean. However, regional climate proxy records from this region are scarce.
Dorothea Elisabeth Moser, Sarah Jackson, Helle Astrid Kjær, Bradley Markle, Estelle Ngoumtsa, Joel B. Pedro, Delia Segato, Andrea Spolaor, Dieter Tetzner, Paul Vallelonga, Elizabeth R. Thomas   +10 more
doaj   +1 more source

Marine tephrochronology: a personal perspective [PDF]

, 2014
This special volume on marine tephrochronology is remarkable, and timely, because it marks a concerted step towards what might be informally termed ‘phase 3’ of a revolution in Quaternary geosciences that began around 40 years ago.
Lowe, David J.
core   +2 more sources

Patterns of Fine Ash Dispersal Related to Volcanic Activity at West Mata Volcano, NE Lau Basin

Frontiers in Marine Science, 2019
Extensive deep (>1500 m) non-hydrothermal ash-rich plumes were present in the water column surrounding West Mata submarine volcano (NE Lau basin) during eruptive phases, but were absent when West Mata was quiescent.
Sharon L. Walker, Edward T. Baker, John E. Lupton, Joseph A. Resing   +3 more
doaj   +1 more source

Global tephra studies: role and importance of the international tephra research group “Commission on Tephrochronology” in its first 60 years [PDF]

History of Geo- and Space Sciences, 2022
Tephrochronology is a correlational and age-equivalent dating method whereby practitioners characterize, map, and date tephra (or volcanic ash) layers and use them stratigraphically as connecting and dating tools in the geosciences (including volcanology)
D. J. Lowe, P. M. Abbott, P. M. Abbott, T. Suzuki, B. J. L. Jensen   +4 more
doaj   +1 more source

The 852/3 CE Mount Churchill eruption: examining the potential climatic and societal impacts and the timing of the Medieval Climate Anomaly in the North Atlantic region [PDF]

Climate of the Past, 2022
The 852/3 CE eruption of Mount Churchill, Alaska, was one of the largest first-millennium volcanic events, with a magnitude of 6.7 (VEI 6) and a tephra volume of 39.4–61.9 km3 (95 % confidence).
H. Mackay, G. Plunkett, B. J. L. Jensen, T. J. Aubry, T. J. Aubry, C. Corona, C. Corona, W. M. Kim, W. M. Kim, M. Toohey, M. Sigl, M. Sigl, M. Stoffel, M. Stoffel, M. Stoffel, K. J. Anchukaitis, C. Raible, C. Raible, M. S. M. Bolton, J. G. Manning, T. P. Newfield, T. P. Newfield, N. Di Cosmo, F. Ludlow, C. Kostick, Z. Yang, L. Coyle McClung, M. Amesbury, A. Monteath, P. D. M. Hughes, P. G. Langdon, D. Charman, R. Booth, K. L. Davies, A. Blundell, G. T. Swindles   +35 more
doaj   +1 more source

Tephrostratigraphic studies on a sediment core from Lake Prespa in the Balkans [PDF]

Climate of the Past, 2013
A detailed tephrostratigraphic record, which dates back to Marine Isotope Stage (MIS) 5b (ca. 91 kyr), has been established from a 17.76 m long core (Co1215) from Lake Prespa (Macedonia, Albania and Greece).
M. Damaschke, R. Sulpizio, G. Zanchetta, B. Wagner, A. Böhm, N. Nowaczyk, J. Rethemeyer, A. Hilgers   +7 more
doaj   +1 more source

Distal occurrence of mid-Holocene Whakatane Tephra on the Chatham Islands, New Zealand, and potential for cryptotephra studies [PDF]

, 2011
The Whakatane Tephra, a rhyolitic tephra erupted ca. 5500 cal. BP from Okataina Volcanic Centre, central North Island, has been identified on the Chatham Islands which lie ˜900 km east of Christchurch, New Zealand.
Hogg, Alan G., Holt, Katherine A., Lowe, David J., Wallace, R. Clel   +3 more
core   +2 more sources

A multidisciplinary study of an exceptional prehistoric waste dump in the mountainous inland of Calabria (Italy) : implications for reconstructions of prehistoric land use and vegetation in Southern Italy [PDF]

, 2020
The mountainous inland of northern Calabria (Southern Italy) is known for its sparse prehistoric human occupation. Nevertheless, a thorough multidisciplinary approach of field walking, geophysical survey and invasive research led to the discovery of a ...
Arienzo, Ilenia, Attema, Peter A. J., De Neef, Wieke, den Haan, Michael, di Vito, Mauro A., Ippolito, Francesca, Noorda, Nikolaas, Sevink, Jan, Ullrich, Burkhart, van Loon, Emiel E.   +9 more
core   +3 more sources

Estimating the frequency of volcanic ash clouds over northern Europe [PDF]

, 2016
Fine ash produced during explosive volcanic eruptions can be dispersed over a vast area, where it poses a threat to aviation, human health and infrastructure. Here, we focus on northern Europe, which lies in the principal transport direction for volcanic
Akaike, Bebbington, Bevilacqua, Blockley, C.B. Connor, Chambers, Connor, Connor, Connor, Costa, Cox, Davies, Davies, De Vleeschouwer, Dugmore, Dugmore, Dugmore, Dugmore, Dzierma, E.J. Watson, Folch, Folch, G.T. Swindles, Gjerløw, Haflidason, Hall, Hall, Hall, Hayward, I.P. Savov, I.T. Lawson, J.A. Wilson, Jensen, Jochum, Jull, Lacasse, Larsen, Larsen, Lawson, Lowe, Mason, Mohn, Newhall, Newton, Pilcher, Pollard, Ponomareva, Pyle, Reilly, Schmidt, Smith, Stevenson, Swindles, Swindles, Thorarinsson, Thordarson, Wastegård, Watson, Wilson, Wulf   +59 more
core   +3 more sources