Results 51 to 60 of about 6,861 (219)

Understanding the hydrogeology and surface flow in the Cuatrocienegas Basin (NE Mexico) using stable isotopes [PDF]

, 2015
In this paper we present surface water oxygen (δ18O), hydrogen (δD) and inorganic carbon (δ13CDIC) isotope data to gain a better understanding of the modern day hydrogeology of Cuatrociénegas Basin, a semi-arid region in northeastern Mexico.
Felstead, NJ, Gonzalez, S, Leng, MJ, Metcalfe, SE   +3 more
core   +1 more source

Late Holocene moisture variability in Arctic Alaska from chitin δ18O

Boreas, EarlyView.
Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley   +1 more source

The Seasonally Altered Atmosphere Moisture Circulations With Rainfall and Rainfall Isotopes in Southwest China

Frontiers in Earth Science, 2022
To interpret the climatic signals of precipitation/speleothem δ18O, it is critical to identify the importance of the factors affecting the precipitation δ18O. This study presents new stable isotope data for precipitation δ18O and δD in the site of Shenqi
Jingyao Zhao, L. Tan, Dong Li, C. Pérez‐Mejías, Xiyu Dong, Jian Wang, Haiwei Zhang, Hai Cheng   +7 more
semanticscholar   +1 more source

New-on-line method for water isotope analysis of speleothem fluid inclusions using laser absorption spectroscopy (WS-CRDS) [PDF]

, 2014
A new online method to analyse water isotopes of speleothem fluid inclusions using a wavelength scanned cavity ring down spectroscopy (WS-CRDS) instrument is presented. This novel technique allows us simultaneously to measure hydrogen and oxygen isotopes
Affolter, S., Fleitmann, D., Leuenberger, M.   +2 more
core   +2 more sources

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

Geochemical characteristics of spring water in Baishuitai of Yunnan and their indicative significance on climatic environment

Carsologica Sinica
Understanding the geochemical characteristics and dynamic changes of groundwater (e.g., springs, etc.) is an important scientific reference for accurately interpreting the paleoclimatic and environmental information on karst deposits (e.g., stalagmites ...
Xi ZHAO, Hongyang XU, Hailing GAN, Aihua YE, Limin ZHOU, Xiangmin ZHENG   +5 more
doaj   +1 more source

Isotopic composition of snow and ice on the glaciers of Novaya Zemlya

Лëд и снег, 2017
In 2015–2016 during the research expeditions of Institute of Oceanology, Russian Academy of Sciences the study of stable water isotopes (18O and D) was conducted on glaciers of Novaya Zemlya.
V. N. Mikhalenko, S. S. Kutuzov, A. A. Ekaykin, A. A. Lavrantiev, A. V. Kozachek, R. A. Chernov   +5 more
doaj   +1 more source

Ice wedges as archives of winter palaeoclimate: a review [PDF]

, 2018
Ice wedges are a characteristic feature of northern permafrost landscapes and grow mainly by snowmelt that refreezes in thermal contraction cracks that open in winter.
Andreev, Ashastina, Baker, Biskaborn, Blaauw, Black, Blinov, Boereboom, Braconnot, Briner, Christiansen, Christiansen, Dansgaard, Elias, Ewing, Fortier, Freitag, Fritz, Froese, Gasanov, Gilichinsky, Kaufman, Kokelj, Konishchev, Konyakhin, Lacelle, Lachenbruch, Lachniet, Laepple, Lauriol, Liu, Mackay, Mackay, Mackay, Mackay, Mackay, Mackay, Mackay, Marcott, Matsuoka, McKay, Meyer, Meyer, Meyer, Meyer, Meyer, Michel, Michel, Murton, Münch, Münch, Nikolayev, O'Neill, Opel, Opel, Opel, PAGES2k Consortium, Porter, Schirrmeister, Sejrup, Sokratov, St-Jean, Steen-Larsen, Streletskaya, Streletskaya, Sundqvist, Vasil'chuk, Vasil'chuk, Vasil'chuk, Vasil'chuk, Vasil'chuk, Vasil'chuk, Wacker, Wang, Wanner, Werner, Werner, Wetterich, Wetterich, Wetterich, Yang, Yang   +81 more
core   +2 more sources

Long‐Term Storage of Meteoric Water in the Variscan Basement: Stable Isotope Constraints (δD–δ18O)

Terra Nova, EarlyView.
ABSTRACT F‐Ba‐Pb‐Zn (±Ag) deposits near the unconformity between the Armorican and Aquitaine basins formed by mixing surface waters and brines with fluid ascending from the basement. To better constrain the source of this fluid and the conditions of mixing, we analyzed the hydrogen (δDwater) and oxygen (δ18Owater) isotopic composition of water trapped ...
Loïc Bouat, Pierre Strzerzynski, Véronique Gardien   +2 more
wiley   +1 more source

Origin and residence time of groundwater based on stable and radioactive isotopes in the Heihe River Basin, northwestern China

Journal of Hydrology: Regional Studies, 2018
Study region: The Heihe River Basin (HRB) is one of several arid basins in which runoff from the Qilian Mountain recharges basin aquifers. Study focus: A basin-wide dataset (δ18O, D, 3H and 14C) is used to determine the present and past relationships ...
L.J. Zhao, C.J. Eastoe, X.H. Liu, L.X. Wang, N.L. Wang, C. Xie, Y.X. Song   +6 more
doaj   +1 more source