Results 1 to 10 of about 6,042 (105)

Shifting winter atmospheric teleconnections to the North Pacific reconcile Younger-Dryas and Holocene δ18O signals [PDF]

open access: yesNature Communications
Using Alaskan lake sediment oxygen isotope records (δ18O), which trace the δ18O of precipitation, we establish that abrupt atmospheric shifts occurred during the last deglacial period in the North Pacific-Arctic.
Lesleigh Anderson   +2 more
doaj   +2 more sources

Stable isotope compositions of precipitation over Central Asia [PDF]

open access: yesPeerJ, 2021
Central Asia is one of the driest regions in the world with a unique water cycle and a complex moisture transport process. However, there is little information on the precipitation δ18O content in Central Asia.
Junqiang Yao, Xinchun Liu, Wenfeng Hu
doaj   +2 more sources

Temperature control on high-resolution SIMS oxygen isotopic compositions in Porites coral skeletons

open access: yesSolid Earth Sciences, 2021
Oxygen isotope composition (δ18O) in Porites coral skeletons at the micrometer scale has been proposed to be uninfluenced by temperature in previous studies.
Jieqiong Zou   +10 more
doaj   +1 more source

The earliest low and high δ18O caldera-forming eruptions of the Yellowstone plume: implications for the 30–40 Ma Oregon calderas and speculations on plume-triggered delaminations [PDF]

open access: yesFrontiers in Earth Science, 2014
We present new isotopic and trace element data for four eruptive centers in Oregon: Wildcat Mountain (40 Ma), Crooked River (32–28 Ma), Tower Mountain (32 Ma), and Mohawk River (32 Ma). The first three calderas are located too far east to be sourced through renewed subduction of the Farallon slab following accretion of the Yellowstone-produced Siletzia
Seligman, Angela N.   +4 more
openaire   +2 more sources

Equatorial Undercurrent Influence on Surface Seawater δ18O Values in the Galápagos

open access: yesGeophysical Research Letters, 2023
Stable isotopes of oxygen (δ18O) in seawater reflect the combined influences of ocean circulation and atmospheric moisture balance. However, it is difficult to disentangle disparate ocean and atmosphere influences on modern seawater δ18O values, partly ...
Jessica L. Conroy   +7 more
doaj   +1 more source

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

open access: yesFrontiers 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   +11 more
doaj   +1 more source

Contrasting Central Equatorial Pacific Oxygen Isotopic Signatures of the 2014/2015 and 2015/2016 El Niño Events

open access: yesGeophysical Research Letters, 2023
Paleoclimate reconstructions of El Niño/Southern Oscillation (ENSO) behavior often rely on oxygen isotopic records from tropical corals (δ18O). However, few reef‐based observations of physical conditions during El Niño events exist, limiting our ability ...
S. Stevenson   +7 more
doaj   +1 more source

Application of major ion concentrations for the prediction of stable isotopic composition in surface water

open access: yesJournal of Environmental Engineering and Landscape Management, 2021
The δ2H and δ18O values in water bodies are essential to the management of water resources because of the ability to insight into hydrological processes. In this study, we have measured and analyzed the major ions (Na+, K+, Ca2+, Mg2+, Cl–, SO24– and HCO–
Kai Chen, Linhua Sun
doaj   +1 more source

Variation characteristics of stable isotopes in precipitation and river water in Fenghuoshan permafrost watershed

open access: yesShui kexue jinzhan, 2012
Due to the complexity of the influence of freeze-thaw of active soil layer on water cycle,the hydrological observation is rare and difficult in permafrost watershed.In order to improve hydrological understanding in permafrost watershed,stable isotopes ...
LIU Guang-sheng   +3 more
doaj   +1 more source

Listening in on the past: what can otolith δ18O values really tell us about the environmental history of fishes? [PDF]

open access: yesPLoS ONE, 2014
Oxygen isotope ratios from fish otoliths are used to discriminate marine stocks and reconstruct past climate, assuming that variations in otolith δ18O values closely reflect differences in temperature history of fish when accounting for salinity induced ...
Audrey M Darnaude   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy