Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Al Werner"'
Publikováno v:
Oceanography, Vol 24, Iss 3, Pp 51-51 (2011)
The Svalbard Research Experience for Undergraduates (REU) program, initiated in 2003, provides a unique, field-based research experience for US undergraduates in Arctic Quaternary geology and climate change. The Svalbard archipelago, between 74° and
Externí odkaz:
https://doaj.org/article/d7504d8c1908446784df84ded96de50b
Autor:
Nicholas P. McKay, Michael J. Retelle, Darrell S. Kaufman, Erik Schiefer, Al Werner, Steve Roof
Publikováno v:
Earth Surface Processes and Landforms. 43:482-498
Sediment yield can be a sensitive indicator of catchment dynamics and environmental change. For a glacierized catchment in the High Arctic, we compiled and analyzed diverse sediment transfer data, spanning a wide range of temporal scales, to quantify
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39259fb46796c6db6eb8fe86fa76866c
https://doi.org/10.1002/esp.4264
https://doi.org/10.1002/esp.4264
Autor:
W. Wyatt Oswald, Zicheng Yu, Darrell S. Kaufman, R. Scott Anderson, Matthew J. Wooller, Cody C. Routson, Benjamin F. Clegg, Casey Saenger, Konrad Gajewski, Yarrow Axford, Hannah Bailey, Feng Sheng Hu, Miriam C. Jones, Al Werner, Charly Massa, Nicholas P. McKay, Andrew C. G. Henderson
Publikováno v:
Quaternary Science Reviews. 147:312-339
Reconstructing climates of the past relies on a variety of evidence from a large number of sites to capture the varied features of climate and the spatial heterogeneity of climate change. This review summarizes available information from diverse Holo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7978b8f25ed9b30bb5974beaa9c07e73
https://doi.org/10.1016/j.quascirev.2015.10.021
https://doi.org/10.1016/j.quascirev.2015.10.021
Autor:
Erik Schiefer, Nicholas P. McKay, Al Werner, Annie Wong, Darrell S. Kaufman, R. Scott Anderson
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f915ac7c5a08ea1d82ae23281ee8ead
https://doi.org/10.1130/abs/2018am-318986
https://doi.org/10.1130/abs/2018am-318986
Autor:
D. Vaillencourt, William J. D'Andrea, Nicholas L. Balascio, Al Werner, Steve Roof, Raymond S. Bradley, Michael J. Retelle
Publikováno v:
Geology. 40:1007-1010
The Arctic region is subject to a great amplitude of climate variability and is currently undergoing large-scale changes due in part to anthropogenic global warming. Accurate projections of future change depend on anticipating the response of the Arc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff71a9ac29e34706c46bbf64dab59de4
https://doi.org/10.1130/g33365.1
https://doi.org/10.1130/g33365.1
Autor:
Ian R. Walker, Al Werner, R. Scott Anderson, Darrell S. Kaufman, Yarrow Axford, Scott F. Lamoureux, Daniel E. Schindler
Publikováno v:
Journal of Paleolimnology. 48:9-26
Sediment cores from Lone Spruce Pond (60.007°N, 159.143°W), southwestern Alaska, record paleoenvironmental changes during the global Last Glacial Maximum (LGM), and during the last 14,500 calendar years BP (14.5 cal ka). We analyzed the abundance o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bca962202f7aa5bc733a7d9b9080ea8e
https://doi.org/10.1007/s10933-012-9607-4
https://doi.org/10.1007/s10933-012-9607-4
Autor:
Steven Roof, Al Werner
Publikováno v:
Arctic, Antarctic, and Alpine Research. 43:621-631
Directly measured growth rates of two lichens (Pseudephebe minuscula and Rhizocarpon sections Rhizocarpon and Superficiale) from Svalbard made over a two-decade interval (1984–2007) are presented. Growth rates were determined by measuring the chang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::441ecda091a6f25e7d1cd4e98f2b2a25
https://doi.org/10.1657/1938-4246-43.4.621
https://doi.org/10.1657/1938-4246-43.4.621
Publikováno v:
Quaternary Science Reviews. 29:1445-1452
Pollen, macro- and micro-fossils, and sedimentologic indicators in sediment cores from Discovery Pond (DP) in south-central Alaska indicate that the coldest interval of the last deglacation was coincident with the onset of the Younger Dryas (YD), aro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0660bd14ca6a9101a74e1feda2f78087
https://doi.org/10.1016/j.quascirev.2010.02.025
https://doi.org/10.1016/j.quascirev.2010.02.025
Autor:
Darrell S. Kaufman, Al Werner, Kristi L. Wallace, Caleb J. Schiff, Teh-Lung Ku, Thomas A. Brown
Publikováno v:
Quaternary Geochronology. 3:56-67
A 5.6-m-long lake sediment core from Bear Lake, Alaska, located 22 km southeast of Redoubt Volcano, contains 67 tephra layers deposited over the last 8750 cal yr, comprising 15% of the total thickness of recovered sediment. Using 12 AMS 14 C ages, al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba7d4a6c1ebd0846eb59680bb8199114
https://doi.org/10.1016/j.quageo.2007.05.001
https://doi.org/10.1016/j.quageo.2007.05.001
Autor:
Thomas A. Brown, Christopher F. Waythomas, R. Scott Anderson, Christian S. de Fontaine, Darrell S. Kaufman, Al Werner
Publikováno v:
Quaternary Research. 68:64-78
Tephra-fall deposits from Cook Inlet volcanoes were detected in sediment cores from Tustumena and Paradox Lakes, Kenai Peninsula, Alaska, using magnetic susceptibility and petrography. The ages of tephra layers were estimated using 21 14C ages on mac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a507dae80e28378802e4668022166f1
https://doi.org/10.1016/j.yqres.2007.03.006
https://doi.org/10.1016/j.yqres.2007.03.006