Results 31 to 40 of about 464 (126)
On Time Scales of Intrinsic Oscillations in the Climate System
Proxy temperature data records featuring local time series, regional averages from areas all around the globe, as well as global averages, are analyzed using the Slow Feature Analysis (SFA) method.
Anastasios A. Tsonis +5 more
doaj +1 more source
Abstract Understanding the recent tectonic activity of buried faults represents a challenge for scientists. In the offshore portion of the Northern and Central Apennines foredeep basin in the Central Adriatic Sea, Italy, high sedimentation rates, exceeding tectonic uplift since the Pliocene, and the offshore location are hampering the detection of ...
Ada De Matteo +8 more
wiley +1 more source
Soil modulation of Quaternary glacial-interglacial cycles
Sinusoidal Milankovitch orbital variations do not match the sawtooth pattern of descent into glaciation followed by abrupt termination to greenhouse interglacials seen in records of marine shale, speleothems, and ice cores.
Gregory J. Retallack
doaj +1 more source
A rock magnetic cyclostratigraphy study was conducted on the Carboniferous Mauch Chunk Formation red beds at Pottsville, Pennsylvania to determine if Milankovitch climate forcing could be detected in these terrestrial, fluvial deposits with hematite as ...
Kenneth P. Kodama
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A Spreading‐Rate Dependence for Periodic Signals Embedded in Otherwise Aperiodic Abyssal Hills
Abstract I present evidence, through an empirical pre‐whitening analysis, that periodic signals are embedded in otherwise aperiodic abyssal hills across paleo‐spreading rates ranging from 1 to 9 cm/yr (half rate). Data are comprised of archival trackline and multibeam bathymetry profiles in north and south Atlantic Oceans, Pacific‐Antarctic Ridge ...
J. A. Goff
wiley +1 more source
Loess Studies in Aotearoa New Zealand
Loess in Aotearoa New Zealand (ANZ) has been studied since its first documented recognition (on Banks Peninsula) in 1878 by Julius von Haast. A decade later, John Hardcastle revealed that southern ANZ loess was both glacial in origin and contained signals of past climates.
Brent V. Alloway +4 more
wiley +1 more source
This research analyzes the cyclostratigraphy of the lacustrine Dabeigou Formation (DBG) of early Jehol Biota age (∼130–135 Ma) in the Luanping Basin, northern China.
Wei Liu +8 more
doaj +1 more source
Terrestrial Analogs to Titan for Geophysical Research
Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon +21 more
wiley +1 more source
Eustasy has commonly been invoked to explain peritidal carbonate cyclicity, but is difficult to explain cycles formed in a greenhouse climate when eustasy is minimal.
Wan Yang, Dan J. Lehrmann
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Testing the impact of stratigraphic uncertainty on spectral analyses of sedimentary series [PDF]
Spectral analysis is a key tool for identifying periodic patterns in sedimentary sequences, including astronomically related orbital signals. While most spectral analysis methods require equally spaced samples, this condition is rarely achieved either in
M. Martinez +4 more
doaj +1 more source

