Textural,geochemical and mineralogical evidence for the origin of peoria loess in Central and Southern Nebraska,USA     

N. R. Winspear  K. Pye 《地球表面变化过程与地形》1995,20(8):735-745

Possible sources of Peoria loess in central Nebraska have been investigated through the fingerprinting of the textural, geochemical and mineralogical characteristics of the loess and possible source sediments, with statistical comparison of the textural and compositional fingerprints. The results of the investigation contrast with the ‘desert loess’ model proposed by Lugn (1960), and are instead consistent with the derivation of the Peoria loess in Nebraska primarily from fluvio-glacial outwash sediments carried by the ancestral North and South Platte River systems from the Rocky Mountain Front Ranges during the late Pleistocene.  相似文献   

Is Bangkok at risk of marine flooding? Evidence relating to the historical floods of AD 1785 and 1983     

Terry  James P.  Winspear  Nigel  Goff  James 《Natural Hazards》2021,105(1):1013-1030

Natural Hazards - Thailand’s low-lying capital city Bangkok is a dense metropolis, one of Asia’s rapidly growing ‘megacities’, and home to over 10 million...  相似文献   

Short communication: Recognising the perils of landslide-generated tsunamis in the Asia–Pacific region     

Terry  James P.  Goff  James  Winspear  Nigel  Bongolan  Vena Pearl 《Natural Hazards》2019,96(3):1413-1428

The objective of the paper was to characterise the temporal and spatial variability of winter warm spells in Central Europe in the years 1966/1967–2015/2016 and to determine the circulation conditions of their occurrence. The applied data were obtained from the Polish Institute of Meteorology and Water Management, Deutscher Wetterdienst and the National Centre for Environmental Prediction/National Centre for Atmospheric Research. A warm spell was defined as a sequence of at least three warm days, i.e. when the maximum air temperature is higher than the 95th percentile of the probability density function designated from observation. The research has proven that over the study period the air temperature increased in the winter season in Central Europe and this translated into an increase in the number of warm days. An average of 3–5 warm spells was recorded per 10 years. The most numerous warm spells occurred during three winter seasons, i.e. 1989/1990, 2006/2007 and 2015/2016. The occurrence of warm spells was related to positive anomalies of geopotential heights over the study area in the cross section of the entire troposphere. Maximum anomalies appeared at 250 hPa geopotential height, and they developed on average 9 days before the commencement of warm spells over the study area.

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