2018年10月5日 · We have made a preliminary attempt to create a gridded data set from the values available in the database. This dataset is described in LeGrande and Schmidt 2006 and uses regional δ 18 O - salinity relationships and PO 4* to define water mass boundaries. Further explanation and the data are provided on a separate page.

Seawater δ18O provides valuable information on the exchange of water between the ocean and atmosphere, ocean upwelling and advection, and continental ice sheet volume (on glacial-interglacial and longer timescales).

2014年1月29日 · 3-Myr stack (the LR04 stack) of benthic d18O records from 57 globally distributed sites aligned by an automated graphic correlation algorithm.

2023年9月1日 · Here we present the Iso2k database, a global compilation of previously published datasets from a variety of natural archives that record the stable oxygen (d18O) or hydrogen (d2H) isotopic composition of environmental waters, which …

2024年11月8日 · Spectral analysis of highly detailed sequences of the profile helps determine the smoothing of the d8O signal, which for the Holocene ice is found to be considerably stronger than expected. We suggest this is due to a process involving diffusion of water molecules along crystal boundaries in the recrystallizing ice matrix.

The climatic pattern revealed by the stalagmite temperature-controlled d18O profiles strongly resembles that of Greenland ice cores on millennial scales, and also corresponds to the detail of decadal-scale cooling events within interstadials.

Stable isotopes of water preserved in geologic archives, primarily as oxygen (d18O), have proven critical for documenting Earth’s climatic and hydrologic systems past and present. However, timescale differences of water isotope inputs to proxy systems and the signal embedded in long paleorecords often confound translation to observed ...

2020年12月1日 · Sixty years of monthly data series of δ18 O in precipitation revealed distinctive decadal long-term patterns and break points for the isotope composition of global precipitation.

We trace oxygen isotopes by looking at the ratio of 18O to 16O. Over 99% of the oxygen on Earth is 16O, with most of the remainder being 18O (1,2).

2016年9月23日 · Here we present regional stacks that characterize mean benthic δ 18 O change for 8 ocean regions and a volume-weighted global stack of data from 263 cores.