WorldCat Identities

Steffen, Konrad

Overview
Works: 42 works in 70 publications in 2 languages and 699 library holdings
Genres: Conference papers and proceedings  Observations 
Roles: Author, Editor, Other
Classifications: GB641, 551.0911
Publication Timeline
.
Most widely held works by Konrad Steffen
Ice surface temperature retrieval from AVHRR, ATSR, and passive microwave satellite data algorithm development and application by Jeffrey R Key( Book )

3 editions published in 1994 in English and held by 152 WorldCat member libraries worldwide

Ice surface retrieval from AVHRR, ATSR and passive microwave satellite data algorithm development and application, NAGW-3437, year 2 annual report by Jeffrey R Key( Book )

2 editions published in 1995 in English and held by 77 WorldCat member libraries worldwide

Papers from the International Symposium on the Verification of Cryospheric Models : held in Zürich, Switzerland, 16-20 August, 1999 by International Symposium on the Verification of Cryospheric Models( Book )

5 editions published in 2000 in English and held by 53 WorldCat member libraries worldwide

Surface temperature and sea ice of an Arctic polynya : North Water in winter : Canadian and Greenlandic High Arctic by Konrad Steffen( Book )

6 editions published in 1985 in English and German and held by 41 WorldCat member libraries worldwide

Abrupt climate change : report( Book )

2 editions published in 2008 in English and held by 20 WorldCat member libraries worldwide

Oberflächentemperatur einer arktischen Polyna : North Water im Winter by Konrad Steffen( )

4 editions published in 1984 in German and Undetermined and held by 14 WorldCat member libraries worldwide

Bunte Steine : ein Festgeschenk ; 1853 by Adalbert Stifter( Book )

1 edition published in 1963 in German and held by 8 WorldCat member libraries worldwide

Variability and forcing of climate parameters on the Greenland ice sheet : Greenland Climate Network (GC-Net) by Konrad Steffen( Book )

5 editions published between 2003 and 2006 in English and held by 5 WorldCat member libraries worldwide

Assessment of basal melt of Petermann Gletscher in northwestern Greenland( Book )

3 editions published between 2003 and 2005 in English and held by 3 WorldCat member libraries worldwide

Sea ice classification from infrared thermometry over the north water, winter 1980/81 : Tagungspapier by Konrad Steffen( Book )

4 editions published in 1982 in English and held by 3 WorldCat member libraries worldwide

Schwerpunkt Naturgefahren: alles im Griff?( Book )

1 edition published in 2014 in German and held by 2 WorldCat member libraries worldwide

The characterization of the cryo-hydrologic system of the Sermeq Avannarleq Glacier in Greenland and its influence on ice temperature by Thomas P Phillips( )

1 edition published in 2010 in English and held by 2 WorldCat member libraries worldwide

The results presented here indicate that current model approaches may underestimate the ice temperatures in the ablation zone. The cryo-hydrologic network has the potential to warm an ice sheet within decades, changing its physical properties in a changing climate
Report of the second session of the ACSYS Observation Products Panel (Geneva, Switzerland, 4-7 October 2000) by ACSYS Observation Products Panel( Book )

1 edition published in 2000 in English and held by 2 WorldCat member libraries worldwide

Alpine Schnee- und Wasserresources gestern, heute, morgen by Tagung "Forum für Wissen"( Book )

4 editions published in 2012 in German and held by 2 WorldCat member libraries worldwide

Assessing supraglacial water volume and the changing dynamics of the surface topography near the Jakobshavn Glacier, Greenland by John J Adler( )

1 edition published in 2010 in English and held by 2 WorldCat member libraries worldwide

On the Greenland Ice Sheet (GIS), the effect of the melt season's changing supraglacial lakes on outlet glacier discharge is not well understood. It is known that many supraglacial lakes drain rapidly during each melt season. While there are conflicting theories of the significance of supraglacial lake drainages towards enhancing ice sheet flow, it is highly important to quantify the actual water volume of supraglacial lakes since their drainage via crevasses or moulins enables the injection of melt water directly into the GIS
Multi-decadal surface temperature trends in East Antarctica inferred from borehole firn temperature measurements and geophysical inverse methods by Atsuhiro Muto( )

1 edition published in 2010 in English and held by 2 WorldCat member libraries worldwide

Geophysical inverse methods (linearized and Monte Carlo inversion) were applied to one full year of data collected from three units installed near the ice divide in the Dome Fuji/Pole of Inaccessibility region and one on Recovery Lake B, situated>500 km south to south-west of and>1000 m lower in altitude than sites near the ice divide. Three sites near the ice divide indicate that the mean surface temperatures have increased approximately 1 to 1.5 K within the past & sim;50 years although the onset and the duration of this warming vary by site. On the other hand, slight cooling to no change was detected at the Recovery Lake B site. Although uncertainties remain due to limitations of the method, these results raise the possibility of an interesting recent climate pattern in East Antarctica; significant warming trend near the ice divide and cooling to no change off the divide
Schwerpunkt Invasive Arten: Freund oder Feind?( Book )

1 edition published in 2014 in German and held by 2 WorldCat member libraries worldwide

Changes in the Arctic ice cover by Konrad Steffen( Visual )

1 edition published in 2006 in English and held by 2 WorldCat member libraries worldwide

Konrad Steffen, director of the Cooperative Institute for Research in Environmental Studies at the University of Colorado, Boulder, speaks on arctic climate, warming and melting dynamics
Basal crevasses and suture zones in the Larsen C Ice Shelf, Antarctica: Implications for ice shelf stability in a warming climate by Daniel J McGrath( )

1 edition published in 2013 in English and held by 1 WorldCat member library worldwide

Understanding ice shelf structure and processes is paramount to future predictions of sea level rise, as nearly 75% of the ice flux from the Antarctic Ice Sheet (AIS) passes through these gates. The breakup of an ice shelf removes the longitudinal back stress acting on the grounded inland ice and leads to flow acceleration, dynamic thinning and frontal retreat, processes that can be sustained for more than a decade. Increased ice discharge to the ocean contributes to global sea level rise. This dissertation investigates basal crevasses and suture zones, two key structural components of ice shelves, in order to understand how the structure of an ice shelf influences its stability in a warming climate. Ground penetrating radar, high-resolution satellite imagery and a variety of modeling approaches are utilized to assess these features on the Larsen C Ice Shelf but in a manner that considers their influence on ice shelf stability around the AIS. Basal crevasses are large-scale (̃66% of ice thickness and ten's of kms in length) and abundant features that are significant structural weaknesses. The viscoplastic deformation of the ice shelf in response to the perturbed hydrostatic balance leads to the formation of both surface depressions and crevasses, hence weakening the ice shelf further. Basal crevasses increase the local ice-ocean interface by ̃30%, thereby increasing basal roughness and altering ice-ocean interactions. Ice-shelf fractures frequently terminate where they encounter suture zones, regions of material heterogeneity that form at the lateral bounds of meteoric inflows to ice shelves. The termination of a 25 km-long rift in the Churchill Peninsula suture zone is investigated and found to contain ̃60 m of accreted marine ice. Steady-state basal melting/freezing rates are determined for the ice shelf and applied to a flowline model to examine the along-flow evolution of ice shelf structure. The thickening surface wedge of locally accumulated meteoric ice, which likely has limited lateral variation in its mechanical properties, accounts for ̃60% of the total ice thickness near the calving front. This suggests that the material heterogeneities present in the lower ̃40% of the ice column are responsible for resisting fracture propagation and thereby delaying tabular calving events. This represents a highly sensitive aspect of ice-shelf stability, as changes in the oceanic forcing may lead to the loss of this heterogeneity
 
moreShow More Titles
fewerShow Fewer Titles
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.68 (from 0.46 for Abrupt cli ... to 0.97 for Variabilit ...)

Alternative Names
Konrad Steffen American glaciologist

Languages
English (35)

German (11)