Results 21 to 30 of about 562,841 (289)

Coring disturbances in IODP piston cores with implications for offshore record of volcanic events and the Missoula megafloods [PDF]

, 2014
Piston cores collected from IODP drilling platforms (and its predecessors) provide the best long-term geological and climatic record of marine sediments worldwide. Coring disturbances affecting the original sediment texture have been recognized since the
Talling, Peter J., Le Friant, Anne, McCanta, Molly, Ishizuka, Osamu, Jutzeler, Martin, White, James, D L, White, James,, Ishizuka, Ozamu, Morgan, Sally, White, James D.L., Talling, Peter   +10 more
core   +1 more source

Drilling the new 5G-5 branch hole at Vostok Station for collecting a replicate core of old meteoric ice

Annals of Glaciology, 2021
Recent studies have shown that stratigraphically disturbed meteoric ice bedded at Vostok Station between 3318 and 3539 m dates back to 1.2 Ma BP and possibly beyond.
Aleksei V. Turkeev, Nikolai I. Vasilev, Vladimir Ya. Lipenkov, Alexey V. Bolshunov, Alexey A. Ekaykin, Andrei N. Dmitriev, Dmitrii A. Vasilev   +6 more
doaj   +1 more source

Warm ocean is eroding West Antarctic Ice Sheet [PDF]

, 2004
Satellite radar measurements show that ice shelves in Pine Island Bay have thinned by up to 5.5 m yr^{-1} over the past decade. The pattern of shelf thinning mirrors that of their grounded tributaries-the Pine Island, Thwaites and Smith glaciers- and ...
Rignot, E, Wingham, Duncan, Rignot, Eric, Shepherd, Andrew, Shepherd, A, Wingham, D   +5 more
core   +1 more source

Towards ice core sampling by subsea robotic vehicles [PDF]

Geoscientific Instrumentation, Methods and Data Systems
Ice coring has developed into one of the most frequently used sampling methods across cryospheric sciences. Sea ice, firn and glacial ice are sampled using a range of different coring systems.
C. Katlein
doaj   +1 more source

Deep ice core drilling to a depth of 3035.22 m at Dome Fuji, Antarctica in 2001–07

Annals of Glaciology, 2021
The Japanese second deep ice coring project was carried out at Dome Fuji, Antarctica. Following the drilling of the pilot hole in 2001, deep ice core drilling led by the Japanese Antarctic Research Expedition (JARE) was conducted over four austral summer
Hideaki Motoyama, Akiyoshi Takahashi, Yoichi Tanaka, Kunio Shinbori, Morihiro Miyahara, Takayasu Yoshimoto, Yoshiyuki Fujii, Atsushi Furusaki, Nobuhiko Azuma, Yukio Ozawa, Akio Kobayashi, Yasushi Yoshise   +11 more
doaj   +1 more source

Ices in Starless and Starforming Cores [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractIcy grain mantles are commonly observed through infrared spectroscopy toward dense clouds, cloud cores, protostellar envelopes and protoplanetary disks. Up to 80% of the available oxygen, carbon and nitrogen are found in such ices; the most common ice constituents – H2O, CO2 and CO – are second in abundance only to H2 in many star forming ...
Oberg, Karin I., Boogert, A. C. Adwin, Pontoppidan, Klaus M., Broek, Saskia van den, van Dishoeck, Ewine F., Bottinelli, Sandrine, Blake, Geoffrey A., Evans II, Neal J.   +7 more
openaire   +2 more sources

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

Journal 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., Beer, J., Suter, M., Dittrich-Hannen, B., Synal, H.-A., Kubik, P.W., Hammer, Claus Uffe, Johnsen, Sigfus Johann   +7 more
openaire   +3 more sources

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

Journal 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., Raisbeck, G.M., Baumgartner, S., Beer, J., Hammer, C., Johnsen, S., Jouzel, Jean, Kubik, P.W., Lestringuez, J., Stievenard, M., Suter, M., Yiou, Pascal   +11 more
openaire   +5 more sources

Development of the JARE deep ice coring system

Antarctic Record, 1990
A deep ice coring system, which is to be used a top the Queen Maud Land ice sheet in 1994-1995 with a plan named "Dome Project", has been developed since 1988.
Yoshiyuki Fujii, Hideaki Motoyama, Hideki Narita, Kunio Shinbori, Nobuhiko Azuma, Yoiti Tanaka, Moriatsu Miyahara, Akiyoshi Takahashi, Okitsugu Watanabe   +8 more
doaj   +1 more source

New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core [PDF]

, 2004
We have used new spaceborne (elevation) and airborne (ice thickness) data to constrain a 2D1/2 model of snow accumulation and ice flow along the Ridge B-Vostok station ice flow line (East Antarctica).
Ritz, C., Jouzel, J., Parrenin, F., Remy, F., Siegert, M. G., Siegert, M.J., Rémy, Florence   +6 more
core   +1 more source