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Kate Andrzejewski, Neil Tabor, Dale Winkler and Timothy Myers
Pedogenic carbonate samples collected from three Lower Cretaceous (Aptian?Albian) fossil localities in Texas and Oklahoma were analyzed to develop paleoatmospheric pCO2 estimates by measuring the stable carbon isotopes of pedogenic calcite and their co-e...
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Greg A. Ludvigson, Aaron F. Diefendorf, Marina B. Suarez, Luis A. González, Megan C. Corcoran, Kristen Schlanser, Peter P. Flaig, Paul J. McCarthy, Dolores van der Kolk, David Houseknecht and Margaret Sanders
We report estimated stable isotope compositions of depositional waters and paleoprecipitation from the Cretaceous Arctic to further elucidate the role of the global hydrologic cycle in sustaining polar warmth during that period. Estimates are based on ne...
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Jeff B. Langman, Julianna Martin, Ethan Gaddy, Jan Boll and David Behrens
A snowpack?s d2H and d18O values evolve with snowfall, sublimation, evaporation, and melt, which produces temporally variable snowpack, snowmelt, and runoff isotope signals. As a snowpack ages, the relatively depleted d2H and d18O values of snow will bec...
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Haoran Zhu, Liping Zhu, Lun Luo and Jiao Li
Based on 360 event-based precipitation samples collected at six stations on the North Tibetan Plateau (NTP) in 2019?2020, we analyzed the influence of meteorological parameters, sub-cloud evaporation, moisture sources, and moisture transmission pathways ...
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Xinyi Wang, Weifang Qiao, Jing Chen, Xiaoman Liu and Fang Yang
Geothermal water samples taken from deep aquifers within the city of Kaifeng at depths between 800 and 1650 m were analyzed for conventional water chemical compositions and stable isotopes. These results were then combined with the deuterium excess param...
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Zilalai Abudouwaili, Yuhui Yang and Xiancheng Feng
The Ili Kashi River Basin is an area with relatively abundant precipitation within the arid region of Northwest China. Using water samples from atmospheric precipitation, surface water, groundwater, and snow meltwater in the basin from July 2018 to June ...
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Tamiru A. Abiye
Dolomitic aquifers are regarded as important groundwater storage sites in South Africa. Since these aquifers occur in a semi-arid climatic setting with low rainfall, often characterized by a torrential downpour and high potential evapotranspiration, the ...
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Alessandro Zanazzi, Weihong Wang, Hannah Peterson and Steven H. Emerman
To investigate the hydrology of Utah Lake, we analyzed the hydrogen (d2H) and oxygen (d18O) stable isotope composition of water samples collected from the various components of its system. The average d2H and d18O values of the inlets are similar to the ...
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Haiao Zeng and Jinglu Wu
As the third largest freshwater lake in China, Taihu Lake has experienced severe cyanobacterial blooms and associated water quality degradation in recent decades, threatening the human health and sustainable development of cities in the watershed. The Yi...
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Peter W. Swarzenski, Mark Baskaran, Robert J. Rosenbauer, Brian D. Edwards and Michael Land
Stable and radioactive tracers were utilized in concert to characterize geochemical processes in a complex coastal groundwater system and to provide constraints on the kinetics of rock/water interactions. Groundwater samples from wells within the Domingu...
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Hsin-Fu Yeh and Jhe-Wei Lee
This study used stable hydrogen and oxygen isotopes as natural tracers to investigate their isotopic composition in precipitation, and in shallow and deep groundwater in the Penghu Islands in the Taiwan Strait. We aimed to understand the differences and ...
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Xin Lan, Wenxiong Jia, Guofeng Zhu, Yue Zhang, Zhijie Yu and Huifang Luo
Stable isotopes of precipitation play an important role in understanding hydrological and climatic processes of arid inland river basins. In order to better understand the difference of regional water cycle and precipitation patterns, precipitation sampl...
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Solange Almeida, Luís Gomes, Alcino Oliveira and Paula Carreira
São Pedro do Sul thermomineral aquifer system is located in the North of Portugal. Hydrogeochemistry and isotopic studies were conducted in order to improve knowledge of this groundwater system, known since ancient Roman times for their therapeutic prope...
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Silvia Iacurto, Gerardo Grelle, Francesco Maria De Filippi and Giuseppe Sappa
Karst aquifer recharge areas are usually difficult to identify because of the complexity of these aquifers? characteristics. On the other hand, their identification is very important in the aim of protecting the groundwater resources that these aquifers ...
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Liudmila L. Demina, Ekaterina A. Novichkova, Alexander P. Lisitzin and Nina V. Kozina
A multiproxy study of the sediment cores taken from the Snorri Drift, formed under the influence of the Iceland?Scotland bottom contour current, and from the Gloria Drift, located southward Greenland at the boundary of Irminger and Labrador Seas, was per...
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Alejandro R. Gómez Dacal,Lucía E. Gómez Peral,Luis A. Spalletti,Alcides N. Sial,Aron Siccardi,Daniel G. Poiré
Pág. 111 - 129
The Tithonian-Valanginian time interval in the Mendoza Shelf (Neuquén Basin, Argentina) is well exposed in the Río Salado, Puesto Loncoche and Cuesta del Chihuido sedimentary sections. From those localities, more than fifty preserved oyster shells of the...
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Yuchuan Meng, Guodong Liu and Mingxi Li
The melting of alpine snow and glaciers is an important hydrologic process on Mount Gongga, China. The relevance of ice-snow melt to the groundwater recharge in the glacierized Hailuogou watershed is so far not well known. To better understand the origin...
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A. A. Namyatov, P. R. Makarevich, E. I. Druzhkova and I. A. Pastukhov
The isotopic parameter d18O in oceanography is used for the calculation of mixing proportions of the Atlantic, rivers, and melted waters as well as the relative content of ice-forming waters. Using these values, as well as nutrient concentrations in the ...
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Mohammed Hssaisoune, Lhoussaine Bouchaou, Mohamed Qurtobi, Hamid Marah, Mohamed Beraaouz and Jamal Stitou El Messari
Karstic aquifers play an important role for drinking and irrigation supply in Morocco. However, in some areas, a deeper understanding is needed in order to improve their sustainable management under global changes. Our study, based on chemical and isotop...
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Tetsuya Endo, Osamu Kimura, Masaru Terasaki, Yoshihisa Kato, Yukiko Fujii and Koichi Haraguchi
The changes in the stable isotope ratios of carbon (d13C), nitrogen (d15N), oxygen (d18O), and mercury (Hg) concentrations in muscle and liver tissues during and after lactation were studied in killer whales stranded along the coast of Hokkaido, in the n...
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