Meteorological Conditions that Initiate Slushflows in the Central Brooks Range, Alaska
نویسندگان
چکیده
منابع مشابه
Cryoturbation in the Central Brooks Range, Alaska
Cryoturbation in permafrost-affected soils is important to many Arctic biogeochemical processes and critical to the appropriate classification of Gelisols. Standardized methodologies for describing the soils formed from these processes and knowledge regarding the time scales at which they operate continue to evolve. Twenty-six profiles were described across a transect in the Midas Lake region o...
متن کاملAn oxygen-isotope record of Holocene climate change in the south-central Brooks Range, Alaska
Understanding the ecological and socio-economic impacts of climatic warming requires knowledge of associated changes in moisture balance. Reconstructions of Holocene moisture-balance variation offer indispensible baseline information against which recent changes can be evaluated. We analyzed Charastem encrustations in the sediments of Takahula Lake, located in the south-central Brooks Range of ...
متن کاملTectonic evolution of the Brooks Range ophiolite, northern Alaska"
Analysis of internal structures of the Brooks Range ophiolite at the three largest and well-exposed klippen reveals a NE-SW structural grain that may parallel the original axis of magmatism of a slow spreading marginal ocean basin. Sub-parallel directions of lattice·fabrics in olivine of mantle peridotite and shape fabrics in pyroxene and plagioclase of layered gabbro indicate that asthenospher...
متن کاملA 2000 year varve - based climate record from the central Brooks Range , Alaska
Varved minerogenic sediments from glacial-fed Blue Lake, northern Alaska, are used to investigate late Holocene climate variability. Varvethickness measurements track summer temperature recorded at Atigun Pass, located 41 km east at a similar elevation (r = 0.31, P = 0.08). Results indicate that climate in the Brooks Range from 10 to 730 AD (varve year) was warm with precipitation inferred to b...
متن کاملHolocene Climate Inferred from Oxygen Isotope Ratios in LakeSediments, Central Brooks Range, Alaska
Analyses of sediment cores from two lakes in the central Brooks Range provide temperature and moisture balance information for the past ∼8500 cal yr at century-scale resolution. Two methods of oxygen isotope analysis are used to reconstruct past changes in the effective moisture (precipitation minus evaporation) and temperature. Effective moisture is inferred from oxygen isotope ratios in sedim...
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ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 1985
ISSN: 0260-3055,1727-5644
DOI: 10.1017/s0260305500009927