Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Cooling Trend"”.
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Alkenone-based evidence of Holocene slopewater cooling in the northwest Atlantic
… the Carolina Slope record shows a slight cooling trend of about 1.50C over the past 5,000 years, which is interrupted by a brief but sudden drop of about 1C between 3,000 and 2,000 years before present. Lack of age control for the core from Fogo Seamount prevents any conclusions about the …
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The Significance of Densely Sampled Observations of Mantle Dynamic Topography
… deviate by $\pm$1~km from the predicted plate cooling trend. Positive and negative anomalies correlate with independent geological and geophysical observations of uplift and subsidence. This oceanic dataset is combined with a continental dataset to generate globally continuous spherical …
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Coastal climate change and variability in the Benguela current system
… reanalysis data to investigate the long-term SST trends in the Benguela Upwelling System over the period 1982-2017. The use of different datasets shows different trends depending on the dataset, which is a concern. However, after a thorough examination, there is some consensus. Results show that …
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Cenozoic Variations in the Deep Western Boundary Current as Recorded in the Seismic Stratigraphy of Contourite Drifts, Newfoundland Ridge, Offshore Canada
… (~50 Ma), and correlates to a long-term global cooling trend that initiated at the end of the Early Eocene Climatic Optimum. Within the Active-Contourite-Drift Phase at ~30 Ma depocenters shifted deeper and current energy and focus is interpreted to have increased in association with global …
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The flow separations in the Taiwan Strait and ocean responses to the "hiatus" of the global mean surface temperature
… SST from 1982 to 2013 revealed a significant cooling trend in the low and mid latitudes (31.4% of the global coastlines) after 1998, while 17.9% of the global coastlines changed from a cooling trend to a warming trend concurrently. The trend reversals in the Northern Pacific and Atlantic …
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Dinoflagellate Cyst Biostratigraphy, Palynofacies and Paleoenvironmental Analysis of the Maastrichtian and Basal Danian, Brazon River, Texas
… from TEX86 organic geochemistry show an overall cooling trend from Early Maastrichtian to the K-Pg boundary.
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A Uintan (Late Middle Eocene) Flora and Fauna from the Uinta Basin, Utah
… these new data suggest a slight drying and cooling trend toward the end of the Eocene. Leaf types also indicate possible seasonality with seasonally dry periods and an overall warm-temperate environment with extreme minima temperatures not much below freezing.</p>
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Palaeoclimatology of the late Palaeocene to middle Eocene: geochemical records of stable and transient climate states
… over 400 kyr is ended abruptly by significant cooling. From the first marginal marine section of this event rapid organic carbon burial occurs over 50 { 100 kyr and is associated with previously unrecorded low oxygen bottom water conditions and high organic burial. We hypothesize that if this …
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The Aptian evolution of the Galve sub-basin (Maestrat Basin; E Iberia)
… 3) A late Early Aptian long-term progressive cooling trend accompanied by a regressive context marked by the establishment of large carbonate platforms with typical Urgonian biotic associations dominated by rudist bivalves and corals. 4) The maximum of the aforementioned regressive phase, …
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Late Quaternary sand ramps in south-western Namibia - Nature, origin and palaeoclimatological significance
… ka BP and the LGM, indicating that the general cooling trend during the Late Pleistocene was subject to a high number of oscillations of the environmental conditions not identified before for southern Namibia. Due to the high resolution obtained by the study of sand ramp sediments, but also due …
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Eastern Tropical Pacific Climate And El Niño Variability During The Past Millennium
… Shift coincided with the deepest Little Ice Age cooling and a southward shift of the Intertropical Convergence Zone. This research provides context to the ENSO modulations of the past millennium by extending the SST record back to ~2700 years before present. This record reveals a long-term …
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Seasonality in a changing climate: Insights from the modern ocean with application to the Eocene Epoch
… are well constrained and document a clear cooling trend, the few and geographically disparate records of local sea surface temperature (SST) from this interval are often conflicting and difficult to reproduce with climate models. Likewise, multi-proxy studies from the same location …