An observational study of summertime ice formation a the Ice Valley in Milyang, Korea
Air temperature ; Geophysics ; Glaciology ; Ice ; Seasonal variation ; Soil moisture ; South Korea ; Summer ; Temperature ; Valley ; Wind speed
Ice Valley at Milyang is a famous summer resort in that natural ice freezes during hot season from early April to late August along a mountain slope. The results of observations during June 3 to 5, 1997, support the selective convection theory
in winter and summer as a thermal filter for the ice formation. However, the detail of the mysterious behavior of Ice Valley's ice remains unveiled.
In this article, the nature, origin and uses of internal Antarctic ice-sheet layering, observed on 60 MHz RES data, are investigated. In doing so an insight into several aspects of modern Antarctic glaciological research is provided : correlating
ice cores; boundary conditions for numerical models to help determine the direction of ice flow; and means of identifying the three-dimensional ice-sheet geometry and architecture.
The High Ice Plateau of the Juneau icefield, British Columbia : form and dynamics
During the 1997 summer field season, a grid of 30 survey stations was established on the high ice plateau in order to locate exactly the ice-flow divide between the Llewellyn and Matthes glaciers. Two geophysical methods, seismic reflections
and gravity, were also employed to determine the thickness of the ice on the plateau. These geophysical measurements revealed that the present-day surface ice movement is largely independent of the subglacial topology.
The likely impact of needle ice processes in the bank erosion system in Lesotho Highlands is examined. It was found that despite the significance of frost activity during winter, rain wash and stream discharge are more effective in sediment
mobilization on stream-banks than are needle ice plays an active role in sediment mobilization throughout much of winter and is an important indirect erosion agent by disaggregating earth materials for easy fluvial removal. - (AJC)
Response of magnitude of δ O18 in shallow ice core of Dasuopu Glacier in the Tibetan Plateau to large scale sea-air interaction
Asia ; Atmospheric circulation ; Glaciology ; Ice core ; Ocean atmosphere interaction ; Oxygen 18 ; Surface temperature ; Tibet
This study tries to reveal the response of the δ O18 in ice core to large scale sea-air interaction according to the analyses on the relationships of actual δ O18 in the shallow ice core of Dasuopu Glacier with the global Sea Surface Temperature
A light portable stream-driven ice drill suitable for drilling holes in ice and firn
This contribution explains the characteristics of a newly developed ice drill which is particularly geared to the needs of glaciologists. It is primarily designed for drilling holes for ablation stakes and for measuring water levels or temperatures
Patterns of ice accumulation and forest disturbance during two ice storms in southwestern Virginia
Appalachian Mountains ; Forest ; Ice ; Mountain ; Slope exposure ; Storm ; United States of America ; Vegetation degradation ; Virginia ; Weather type
This paper discusses multiple scales of ice accumulation and forest disturbance resulting from the 1994 storms in southwestern Virginia. The AA. first examine synoptic-scale meteorology of the two 1994 storms. Second, they discuss topographic
variations in forest damage. Third, they quantify the level of canopy disturbance in several damage stands. Finally, they compare patterns of damage associated with the 1994 events to those produced by several other ice storms.
Mass balance of the Greenland ice sheet : can modern observation methods reduce the uncertainty?
Glacier dynamics ; Glacier mass balance ; Glaciology ; Global change ; Greenland ; Ice sheet ; Methodology ; Model ; Remote sensing ; Sea level
The purpose of this paper is to point to methods that have the potential to reduce the uncertainty of estimates of the long-term mass balance of the ice-sheet. Studies of the Greenland ice sheet will be used as an illustration. The focus
will be on airborne and satellite remote sensing methods. Remote sensing observations combined with ice sheet modelling seems an alternative way of obtaining long-term and short-term ice sheet contributions to sea-level change.
The southern margin of the Late Cainozoic ice cap on the Central Plateau of Tasmania
This paper reports new geomorphological mapping, and reviews the extent, dating, pattern, and nature of past glaciation of the Tasmania's Central Plateau. The Last Glacial Maximum (LGM) ice limits on the southern part of the Central Plateau
Arctic Region ; Glaciation ; Ice sheet ; Model ; Palaeo-environment ; Palaeoclimate ; Quaternary ; Russia ; Sea level
A numerical model of the Eurasian High Arctic ice sheet is used to make predictions about the glaciation of the Kara Sea and Severnaya Zemlya. An inverse approach to modeling is adopted, where ice-sheet margins are forced to match those derived from
recent geological investigations. The only parameter allowed to vary within this inverse procedure is the model's paleoclimate (surface air temperature and accumulation). Thus, model results indicate the thickness and dynamics of the ice sheet over
Drainage ; Flood ; Forecast ; Glacial features ; Glacial lake ; Glacier fluctuation ; Ice breakup ; Model ; Pic discharge ; Seismicity ; Volcanism
This review summarizes and clarifies the current state of knowledge of glacier-impounded or ice-dammed lake behaviour, and presents a simple model of the key aspects and implications of ice-dammed lake drainage. The core of the article examines
the relationship between controls on ice-dammed lake drainage and glacier outburst flood or jökulhlaup character.
Directions of ice flow during the last glaciation in counties Meath, Westmeath and Cavan
Ice flow direction indicators in north-west County Meath and adjacent parts of Westmeath and Cavan are described. Drumlins, striae, roches moutonnées, and other streamlined features, as well as till fabrics, suggest a general flow during glacial
maximum of north-west to south-east when combined with erratic carriage data. Analysis of the configuration of ice marginal moraines and subglacially deposited esker ridges deposited during glacial retreat, as well as till fabric analysis of deglacial
sediments, suggest a more complicated retreat of ice.
Atlantic Ocean ; Deglaciation ; Drainage network ; Glacier mass balance ; Ice sheet ; Lateglacial ; Meltwater ; Model ; North America ; North Atlantic Ocean ; Proglacial lake ; Quaternary ; Runoff ; Water balance
The Northern Hemisphere ice sheets decayed rapidly during deglacial phases of the ice-age cycle, producing meltwater fluxes that may have been of sufficient magnitude to perturb oceanic circulation. This paper introduces a continental ice-sheet
Annual mass-balance series of a temperate glacier in the Caucasus, reconstructed from an ice core
Caucasus ; European part of Russia ; Geochemistry ; Geophysics ; Glacier ; Glacier mass balance ; Ice core ; Oxygen 18 ; Time series ; Twentieth Century
Identification of annual layers in a firn/ice core provides a possibility to reconstruct the mass-balance sequence for glaciers where no direct observations have been carried out. A number of cores is obtained from the boreholes drilled