Results 31 to 40 of about 563 (136)

Triple Oxygen and Hydrogen Isotopes of Soil Water Across Climates, Seasons, and Depths

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Soil waters are a central component of the terrestrial water cycle. Their δ2H, δ18O, and d‐excess values contain rich information about hydroclimate, including the source of moisture and its evaporative history. Paleoclimate workers seek to investigate ancient hydroclimates via triple oxygen isotope geochemistry, termed Δ′17O, which is ...
Julia R. Kelson, Naomi E. Levin, David P. Huber, Lixin Jin, Hugo A. Gutiérrez Jurado, Jennifer L. Pierce   +5 more
wiley   +1 more source

Tracing isotopic signatures (δD and δ18O) in precipitation and glacier melt over Chorabari Glacier–Hydroclimatic inferences for the Upper Ganga Basin (UGB), Garhwal Himalaya

Journal of Hydrology: Regional Studies, 2018
Study region: Chorabari Glacier in Upper Ganga Basin, Garhwal Himalaya. Study focus: Authors attempt to characterize the isotopic signatures in different components of the hydrological cycle and decipher the role of summer and winter precipitation on ...
Amit Kumar, Sameer K. Tiwari, Akshaya Verma, Anil K. Gupta   +3 more
doaj   +1 more source

Late Holocene moisture variability in Arctic Alaska from chitin δ18O

Boreas, Volume 55, Issue 3, Page 751-767, July 2026.
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

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, Volume 55, Issue 3, Page 768-789, July 2026.
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

Decadal Water Level Decline Suppresses Ecosystem Metabolism and Mitigates Net Heterotrophy in a Floodplain Lake

Water Resources Research, Volume 62, Issue 6, June 2026.
Abstract Precipitation and hydrological processes fundamentally reshape aquatic physicochemical properties and biological interactions, thereby regulating lake metabolism and carbon (C) dynamics. This study integrated 5 years of field data with machine learning to estimate 30 years of ecosystem metabolic rates (gross primary production [GPP], ecosystem
Junjie Jia, Guirui Yu, Kun Sun, Tao Cui, Yang Gao   +4 more
wiley   +1 more source

O, H and C isotopic systematics of Icelandic groundwater [PDF]

E3S Web of Conferences, 2019
Stable water isotopes of oxygen and hydrogen have been studied in Icelandic natural waters since 1960 for hydrological and geothermal research. All the waters are of meteoric and seawater origin.
Sveinbjörnsdóttir Arny E., Stefánsson Andri, Heinemeier Jan   +2 more
doaj   +1 more source

Improved Constraints on Andean Glaciations From the Lake Titicaca Continental Drilling Record

Paleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.
Abstract Long sedimentary records from tropical lakes provide crucial archives for reconstructing the timing and extent of tropical alpine glaciations, yet robust chronologies beyond the radiocarbon limit (ca. 50 ka) remain scarce. Here, we refine the ca. 350 kyr chronology for Lake Titicaca (Peru‐Bolivia) using radiocarbon dating, optically stimulated
Victoria L. Todd, Timothy M. Shanahan, Daniel Stockli, Axel K. Schmitt, Steven Forman, Sherilyn C. Fritz, Paul A. Baker, Geoffrey O. Seltzer   +7 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

Characteristics of fractionation of hydrogen and oxygen isotopes in evaporating water in the typical region of the North China Plain

Shui kexue jinzhan, 2015
To study the characteristics of fractionation of hydrogen and oxygen isotopes in evaporating water in Hengshui,a typical region of the North China Plain,two sets of outdoor water evaporation experiments with different salinities were conducted under ...
MA Bin, LIANG Xing, JIN Menggui, LI Jing, NIU Hong   +4 more
doaj   +1 more source

Does Palsa Thaw in Northern Finland Contribute to Remobilisation of Metals Accumulated in Peat Into Surface Waters?

Land Degradation &Development, Volume 37, Issue 9, Page 4230-4250, 30 May 2026.
ABSTRACT Permafrost is rapidly degrading in the sporadic zone, including palsa mires in Scandinavia. Peatlands in the area have likely accumulated heavy metals from atmospheric deposition of industrial contaminants in the wider region. As the palsa mire chemical composition is not well known, and in other permafrost regions the permafrost thaw may ...
Joanna Katarzyna Jóźwik, Krystyna Kozioł, Marcin Frankowski, Marta Jakubiak, Kamil Nowiński, Mariusz Jędrysek, Danuta Szumińska, Żaneta Polkowska   +7 more
wiley   +1 more source