Results 41 to 50 of about 3,413,444 (233)

Progress in paleoclimate modeling [PDF]

open access: yes, 2006
International audienceThis paper briefly surveys areas of paleoclimate modeling notable for recent progress. New ideas, including hypotheses giving a pivotal role to sea ice, have revitalized the low-order models used to simulate the time evolution of ...
AchutaRao   +168 more
core   +4 more sources

Linking glacial-interglacial states to multiple equilibria of climate [PDF]

open access: yes, 2018
Glacial-Interglacial cycles are often described as an amplified global response of the climate to perturbations in solar radiation caused by oscillations of Earth's orbit. However, it remains unclear whether internal feedbacks are large enough to account
Ferreira, David   +3 more
core   +1 more source

Middle Miocene-Pleistocene Magneto-Cyclostratigraphy from IODP Site U1501 in the Northern South China Sea

open access: yesFrontiers in Earth Science, 2022
Site U1501 of International Ocean Discovery Program (IODP) Expedition 368 locates on a broad regional basement high in the northern margin of the South China Sea (SCS).
Meinan Shi   +19 more
doaj   +1 more source

On the peritidal cycles and their diagenetic evolution in the Lower Jurassic carbonates of the Calcare Massiccio Formation (Central Apennines) [PDF]

open access: yes, 2015
This paper shows the environmental changes and high-frequency cyclicity recorded by Lower Jurassic shallow- water carbonates known as the Calcare Massiccio Formation which crop out in the central Apennines of Italy.
Brandano, Marco   +3 more
core   +1 more source

Toward generalized Milankovitch theory (GMT) [PDF]

open access: yesClimate of the Past
In recent decades, numerous paleoclimate records and results of model simulations have provided strong support for the astronomical theory of Quaternary glacial cycles formulated in its modern form by Milutin Milankovitch.
A. Ganopolski, A. Ganopolski
doaj   +1 more source

SPECTRAL ANALYSIS OF TOARCIAN SEDIMENTS FROM THE VALDORBIA SECTION (UMBRIA-MARCHE APENNINES): THE ASTRONOMICAL INPUT IN THE FORAMINIFERAL RECORD

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2016
Toarcian sections studied mainly in Europe have revealed the incidence of Milankovitch forcing with a well-developed, highly stable, 405 ky component of eccentricity, a short-term eccentricity of ~100 kyr, the cycle of obliquity ~36 kyr, and the ...
FRANCISCO J. RODRÍGUEZ-TOVAR   +3 more
doaj   +1 more source

Milankovitch cycles and the astronomical time scale of the Zhujiang Formation in the Baiyun Sag, Pearl River Mouth Basin, China

open access: yesOpen Geosciences, 2022
The Zhujiang Formation in the Baiyun Sag, Pearl River Mouth Basin, China, is formed primarily in a deep-water continental slope environment. Its chronostratigraphic framework is based on biostratigraphy and sequence stratigraphy, and its geological ...
He Ping   +3 more
doaj   +1 more source

Milankovitch-driven cycles in the Precambrian of China: The Wumishan Formation

open access: yesJournal of Palaeogeography, 2013
Carbonate strata of the Mesoproterozoic Wumishan Formation in the Jixian area near Tianjin are ~3300 m thick and were deposited over some 100 million years (from ~1310±20 Ma to ~1207±10 Ma).
Mei Mingxiang, Maurice E. Tucker
doaj   +1 more source

Orbital frequencies in the carbonate sedimentary record: distorted by diagenesis? [PDF]

open access: yes, 2004
The most important archive of Earth’s climate change through geologic history is the sedimentary rock record. Rhythmic sedimentary alternations are usually interpreted as a consequence of periodic variations in the orbital parameters of the Earth.
Bornholdt, Stefan   +2 more
core   +1 more source

The Astronomical Pulse of Global Extinction Events

open access: yesThe Scientific World Journal, 2006
The linkage between astronomical cycles and the periodicity of mass extinctions is reviewed and discussed. In particular, the apparent 26 million year cycle of global extinctions may be related to the motion of the solar system around the galaxy ...
David F.V. Lewis, Jean-Lou C.M. Dorne
doaj   +1 more source

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