Glacial Change

Science News ◽  
2005 ◽  
Vol 168 (25) ◽  
pp. 387
Author(s):  
Sid Perkins
Keyword(s):  
Glacial Change

scholarly journals Report examines potential impacts of glacial change in Himalayas

Eos ◽  
2012 ◽  
Vol 93 (39) ◽  
pp. 374-375
Author(s):  
Randy Showstack
Keyword(s):  
Glacial Change

Postglacial–Glacial Change in Climate in the Indian Ocean

Nature ◽  
1967 ◽  
Vol 214 (5091) ◽  
pp. 873-875 ◽  
Author(s):  
JOHN R. CONOLLY
Keyword(s):  
Indian Ocean ◽  
The Indian Ocean ◽  
Glacial Change

scholarly journals Remote Sensing Study of Glacial Change in the Northern Patagonian Icefield

2015 ◽  
Vol 04 (04) ◽  
pp. 270-279 ◽  
Author(s):  
Lucy Dixon ◽  
Shrinidhi Ambinakudige
Keyword(s):  
Remote Sensing ◽  
Glacial Change

scholarly journals Sensitivity of alpine glacial change detection and mass balance to sampling and datum inconsistencies

2013 ◽  
Vol 7 (1) ◽  
pp. 55-101
Author(s):  
T. Goulden ◽  
C. Hopkinson ◽  
M. N. Demuth
Keyword(s):  
Change Detection ◽  
Mass Balance ◽  
Surface Profile ◽  
Error Sources ◽  
Sampling Schemes ◽  
Digital Elevation ◽  
Vertical Datum ◽  
Sampling Intervals ◽  
Elevation Model ◽  
Glacial Change

Abstract. Glacial mass balance estimated through the geodetic method requires glacial surface coordinate observations from historical and contemporary sources. Contemporary observations and historical topographic maps are typically referenced to separate horizontal and vertical datums and observed with different sampling intervals. This research demonstrates the sensitivity of glacial change detection to the datum considerations and sampling schemes through case studies of Andrei, Bridge and Peyto glaciers in Western Canada. To simulate the procedure of observing the glacial surfaces, profile lines were sampled from Digital Elevation Model (DEMs) on contour intervals for historical data and horizontal intervals for contemporary data. Profile lines from the following scenarios were compared: (1) different horizontal and vertical sampling schemes; (2) the horizontal datum was correctly reconciled but the vertical datum was not; (3) the vertical datum was correctly reconciled but the horizontal datum was not; (4) both the horizontal and vertical datums were correctly reconciled; and (5) both the horizontal and vertical datums were incorrectly reconciled. Vertical errors of up to 6.9 m, 6.0 m and 5.0 m were observed due to sampling effects and vertical errors of 22.2 m, 9.9 m and 55.0 m were observed due to datum inconsistencies on Bridge, Andrei and Peyto glacier respectively. Horizontal datum inconsistencies manifested as erratic levels of growth or downwasting along the glacial surface profile and vertical datum errors manifested as a consistent vertical offset. Datum inconsistencies were identified to contribute errors of up to 257.2 × 106 m3 (or 87%) and 54.6 × 106 m3 (or 580%) of estimated volume change below and above the equilibrium line respectively on Peyto Glacier. The results of this study provide an estimate of typical errors due to sampling constraints or datum inconsistencies as well as guidance for identifying where these error sources have contaminated mass balance results.

Racial Minority and Female Employment in Policing: The Implications of “Glacial” Change

1985 ◽  
Vol 31 (4) ◽  
pp. 555-572 ◽  
Author(s):  
Samuel Walker
Keyword(s):  
Public Attitudes ◽  
Female Employment ◽  
Police Performance ◽  
Police Departments ◽  
Employment Practices ◽  
Factors Associated ◽  
American Police ◽  
The Impact ◽  
Glacial Change ◽  
Change Forces

This article reviews the issues surrounding the employment of racial minorities and women by American police departments. It places particular emphasis on the extent to which slow but uneventful change forces a reconsideration of our understanding of the police. The article reviews the available data on police employment and examines the issues surrounding the factors associated with progress toward equal employment opportunity, the impact of changing employment practices on police performance, public attitudes, and the dynamics of the police subculture.

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