Results 51 to 60 of about 4,963 (203)

Evolution of Crematogaster sordidula (Hymenoptera, Formicidae) Ants in the Mediterranean Region During Plio‐Pleistocene Climatic Changes

open access: yesZoologica Scripta, EarlyView.
ABSTRACT Understanding insect responses to global climate change involves identifying strategies used during past climate oscillations. Phylogeography offers a powerful framework to unravel how historical climatic and geological events have shaped the spatial genetic patterns of species, providing critical insights into evolutionary processes, whereas ...
Jody H. Voges   +12 more
wiley   +1 more source

Testing the detectability of spatio–temporal climate transitions from paleoclimate networks with the START model [PDF]

open access: yesNonlinear Processes in Geophysics, 2014
A critical challenge in paleoclimate data analysis is the fact that the proxy data are heterogeneously distributed in space, which affects statistical methods that rely on spatial embedding of data.
K. Rehfeld, N. Molkenthin, J. Kurths
doaj   +1 more source

The potential of gypsum speleothems for paleoclimatology: application to the Iberian Roman Humid Period

open access: yesScientific Reports, 2020
Carbonate cave deposits (speleothems) have been used widely for paleoclimate reconstructions; however, few studies have examined the utility of other speleothem-forming minerals for this purpose.
Fernando Gázquez   +5 more
doaj   +1 more source

Reconstructing the Last 71 ka Paleoclimate in Northeast China by Integrating Typical Loess Sections

open access: yesQuaternary
Long-term continuous deposits and well-preserved thick loess sections are natural archives for the reconstruction of global climate change. However, the loess sections are often discontinuous owing to soil erosions and accumulations.
Juan Li   +7 more
doaj   +1 more source

Set-up of the PMIP3 paleoclimate experiments conducted using an Earth system model, MIROC-ESM [PDF]

open access: yesGeoscientific Model Development, 2013
Paleoclimate experiments using contemporary climate models are an effective measure to evaluate climate models. In recent years, Earth system models (ESMs) were developed to investigate carbon cycle climate feedbacks, as well as to project the future ...
T. Sueyoshi   +12 more
doaj   +1 more source

Gully erosion in India: Geo‐environmental controls and region‐specific characteristics

open access: yesGeographical Research, Volume 64, Issue 2, May 2026.
Spatial statistical analyses using a novel spatial database of India‧s gully erosion landforms revealed that India has six major gullying‐affected regions, three of which (EU, DU, and KCH) are dominated by gully systems (gully networks), with badlands (vast intensely gullied landscapes) being predominant in the other three regions (YB, GP, and RU ...
Anindya Majhi   +3 more
wiley   +1 more source

Fluorination of Silver Phosphate in Nickel Reaction Vessels for Triple Oxygen Isotope Analysis

open access: yesRapid Communications in Mass Spectrometry, Volume 40, Issue 7, 15 April 2026.
ABSTRACT Rationale Increasingly, more laboratories are measuring the triple oxygen isotope values of phosphate. Standardization is key to having good interlaboratory results. Here, we present the triple oxygen isotope values of a suite of standards using fluorination and compare them with previously reported triple oxygen isotope values. Methods Silver
Jordan A. G. Wostbrock   +4 more
wiley   +1 more source

Depositional and stratigraphic evolution of a Permian megalake system: Implications for seiche‐influenced models

open access: yesThe Depositional Record, Volume 12, Issue 2, April 2026.
During the Late Permian, the rise of the Gondwanides Belt trapped marine waters, giving birth to a vast megalake. This lake shifted between overfilled, balanced‐fill and underfilled stages that are recorded by high‐frequency accommodation changes, while meteorological seiches shaped the sedimentary dynamic and produced heterolithic beds.
B. Christofoletti   +6 more
wiley   +1 more source

Temperature extremes across elevation gradients: evidence from two German mountain observatories

open access: yesFrontiers in Earth Science
Mountain regions are warming rapidly, yet long records across elevation are rare. This study presents the first comprehensive assessment of temperature extremes across an elevation gradient in the Bavarian Alps at two long-term observatories ...
Monica Ionita   +5 more
doaj   +1 more source

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