منابع مشابه
Similarity of vegetation dynamics during interglacial periods.
The Velay sequence (France) provides a unique, continuous, palynological record spanning the last four climatic cycles. A pollen-based reconstruction of temperature and precipitation displays marked climatic cycles. An analysis of the climate and vegetation changes during the interglacial periods reveals comparable features and identical major vegetation successions. Although Marine Isotope Sta...
متن کاملA GCM Comparison of Plio-Pleistocene Interglacial-Glacial Periods in Relation to Lake Elâ•Žgygytgyn, NE Arctic Russia
iii ACKNOWLEDGMENTS I would like to sincerely thank Robert M. DeConto for guiding me through my research project and having the patience while I learn and enhance my knowledge of MATLAB and using climate models. I would also like to thank Julie Brigham-Grette for having the patience as I learned the specific tools to carry out my research. She has instilled an immense amount of interest in the ...
متن کاملLast Interglacial Arctic warmth confirms polar amplification of climate change
The warmest millennia of at least the past 250,000 years occurred during the Last Interglaciation, when global ice volumes were similar to or smaller than today and systematic variations in Earth’s orbital parameters aligned to produce a strong positive summer insolation anomaly throughout the Northern Hemisphere. The average insolation during the key summer months (M, J, J) was ca 11% above pr...
متن کاملGluconeogenesis in arctic ground squirrels between periods of hibernation.
The hibernation season in the arctic ground squirrel (Citellus undulatus) is broken into 8- to 18- day cycles by short homeothermal periods during which the carboydrate reserves depleted during hibernation are replenished. This study follows a number of metabolities in tissues and body fluids to assess the sources for reconstitution of the glucose reserves: lactate, urea, ammonia, free fatty ac...
متن کاملSpeleothem evidence from Oman for continental pluvial events during interglacial periods
Growth periods and stable isotope analyses of speleothems from Hoti Cave in northern Oman provide a record of continental pluvial periods extending back over the past four of Earth’s glacial-interglacial cycles. Rapid speleothem growth occurred during the early to middle Holocene (6–10.5 ka B.P.), 78–82 ka B.P., 120–135 ka B.P., 180–200 ka B.P., and 300–325 ka B.P. The speleothem calcite deposi...
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ژورنال
عنوان ژورنال: American Journal of Science
سال: 1885
ISSN: 0002-9599
DOI: 10.2475/ajs.s3-29.172.300