Results 31 to 40 of about 3,287,043 (305)

Chlorine 36 fallout in the Summit Greenland Ice Core Project ice core [PDF]

open access: yesJournal of Geophysical Research: Oceans, 1997
The natural cosmogenic radioisotope 36Cl has been measured in the Greenland Ice Core Project ice core from Summit, Greenland. Generally, a good correlation between 36Cl and δ18O was found, even in glacial periods with strong δ18O oscillations. The 36Cl flux is calculated assuming an exponential relationship between accumulation rate and δ18O.
Baumgartner, S.   +7 more
openaire   +3 more sources

A one-dimensional temperature and age modeling study for selecting the drill site of the oldest ice core near Dome Fuji, Antarctica [PDF]

open access: yesThe Cryosphere, 2023
The recovery of a new Antarctic ice core spanning the past ∼ 1.5 million years will advance our understanding of climate system dynamics during the Quaternary.
T. Obase   +12 more
doaj   +1 more source

Beryllium 10 in the Greenland Ice Core Project ice core at Summit, Greenland [PDF]

open access: yesJournal of Geophysical Research: Oceans, 1997
Concentrations of the cosmogenic isotope 10Be have been measured in more than 1350 samples from the Greenland Ice Core Project (GRIP) ice core drilled at Summit, Greenland. Although a dust‐associated component of 10Be retained by 0.45 μm filters in some of the samples complicates the interpretations, the results confirm that the first‐order origin of ...
Yiou, F.   +11 more
openaire   +5 more sources

record between 40 and 8 kyr B.P. from the Greenland Ice Core Project ice core [PDF]

open access: yes, 1997
CO2 ice-core records show an increase in the atmospheric concentration of 80–100 parts per million by volume (ppmv) from the last glacial maximum (LGM) to the early Holocene.
J. M. Barnola   +13 more
core   +1 more source

GISP2 ice core Holocene sodium concentration record

open access: yes, 2022
This repository contains GISP2 ice core (Summit, Greenland) sodium concentrations of the upper ca. 1600 meter section of the core, corresponding to the ca. 11,000 years of the Holocene. The time series is smoothed using a 100-yr Gaussian kernel.
Vallelonga, Paul T   +13 more
core   +1 more source

Identification of core ion cyclotron instabilities on HL-2A tokamak

open access: yesNuclear Fusion, 2023
Instabilities in multiplies of ion cyclotron frequency range are identified and termed as core ion cyclotron emission (ICE) in recent HL-2A neutral beam injection heated experiments.
Linzi Liu   +25 more
doaj   +1 more source

340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core [PDF]

open access: yes, 2006
Copyright @ 2006 American Geophysical Union (AGU)Precipitation delivery mechanisms for Dolleman Island (DI), located off the east coast of the Antarctic Peninsula, are investigated using reanalysis and back trajectory data. The Southern Annular Mode (SAM)
McGregor, GR   +8 more
core   +1 more source

Ice core hot-flid drilling

open access: yesAntarctic Record, 1994
Fast hole production is possible using ice core hot-fluid drilling. The present paper describes a method for calculation of drill penetration rate dependent on the fluid flux, fluid temperature, physical properties of fluid, size of hot-fluid drill head ...
B.B. Kudryashov, N.G. Menshikov
doaj   +1 more source

Advancing interpretation of incoherent scattering in ice-penetrating radar data used for ice core site selection [PDF]

open access: yesThe Cryosphere
Below the coherent layering in ice-penetrating radar data collected in Antarctica and Greenland, incoherent scattering is common. This scattering is signal, not noise, and has the potential to inform our understanding of the structure and dynamics of the
E. L. Mutter, N. Holschuh
doaj   +1 more source

Home - About - Disclaimer - Privacy