3 edition of EPOCH 2002 user"s guide for ultrasonic velocity measurements in glacier ice found in the catalog.
EPOCH 2002 user"s guide for ultrasonic velocity measurements in glacier ice
Joan J. Fitzpatrick
by U.S. Dept. of the Interior, U.S. Geological Survey, [Books and Open-File Reports Section, distributor in [Denver, CO]
Written in English
|Statement||by Joan J. Fitzpatrick.|
|Series||Open-file report -- 92-534., U.S. Geological Survey open-file report -- 92-534.|
|Contributions||Geological Survey (U.S.)|
|The Physical Object|
|Pagination||iii, 17 leaves|
|Number of Pages||17|
The Columbia Glacier drains west from Columbia Icefield into British Columbia. The glacier in was km long, by km long and in km long. The glacier drops rapidly from the plateau area over a major ice fall, which created a series of ogives, as seen in . The results of laboratory experiments performed with a prototype of a measuring device intended for monitoring the thickness and drift velocity of ice in Arctic seas are presented. This device is a system of hydrostatic-pressure sensors located inside a hollow flexible tube. Owing to the positive buoyancy, the system of sensors is pressed to the bottom of drifting : D. V. Zyryanov, R. Korsnes.
Sonic methods for measuring crystal orientation fabric in ice, and results from the West Antarctic ice sheet (WAIS) Divide - Volume 63 Issue - DAN KLUSKIEWICZ, EDWIN D. WADDINGTON, SRIDHAR ANANDAKRISHNAN, DONALD Cited by: 4. Please read our short guide how to send a book to Kindle. Save for later. You may be interested in. Constitutive Modeling of Soils and Rocks. Wiley-ISTE. Year: Language: english. File: PDF, MB. Soil and rock description in engineering practice. David Norbury. Language: english. File: PDF, MB.
1 Ice flow velocity as a sensitive indicator of glaci er state Martin Stocker-Waldhuber 1/2, Andrea Fischer 1, Kay Helfricht 1, Michael Kuhn 3 1Institute for Interdisciplinary Mountain Research, Austrian Academy of Sciences, Innsbruck, , Aust ria 2Department of Geography, Physical Geography, Cathol ic University of Eichstätt-Ingolstadt, , Germa nyCited by: 1. This course will introduce students to the science behind climate change as well as the physical and chemical processes that govern components of the cryosphere, including snow, permafrost, sea.
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Panametrics Epoch ultrasonic testing workstation. Detailed procedures for sample preparation and measurement of differential p-wave velocities in fine-grained glacier ice are also outlined in this document. Measurement of the speed of propagation of elastic waves through ice in two mutually perpendicular directions, down and across the drillingAuthor: J.J.
Fitzpatrick. Get this from a library. EPOCH user's guide for ultrasonic velocity measurements in glacier ice. [Joan J Fitzpatrick; Geological Survey (U.S.)]. The spatial pattern of velocity field exhibits an increasing trend from the western grounding line to the maximum at the middle part of the ice shelf front on Larsen C with a velocity of.
Figure Distribution of the measured stakes used for velocity determina-tion. Measurements from Jul. 17, (made by s) and Sept. 11, Velocity Calculations The glacier surface velocity can be obtained from the di erence between the stake positions in the two surveys using the following equations.
First, theFile Size: KB. considered test cases, comparison against direct ice thickness measurements revealed deviations on the order of 10 24% of the mean ice thickness (1˙estimate). Models relying on multiple data sets – such as surface ice velocity ﬁelds, surface mass balance, or rates of ice thickness change – showed high sensitivity to input data quality.
 Ice velocities derived from five Landsat 7 images acquired between January and February show a two‐ to six‐fold increase in centerline speed of four glaciers flowing into the now‐collapsed section of the Larsen B Ice by: Chapter 6 Temperatures in glaciers and ice sheets 20 18 16 14 12 10 8 6 Temperature (C) Depth (m) 1 2 12 3 10 4 9 5 8 67File Size: 1MB.
Glacier Flow and Ice compressional flow. 10/8/09 2 Zone of extension – driving particles downward Zone of compression – driving particles upward Ice Shelf – Joughin and Tulaczyk,Science. Scale is 0 to meters / yr Crevasses can be tracked with repeated.
Introduction. The existence of a km long subglacial lake beneath Vostok Station, central East Antarctica (Lake Vostok) has been known for a number of years.At Vostok Station, a deep ice core which holds palaeo-environmental data spanning over years terminates m from the surface of the sub-ice lake.
Ice flows onto Lake Vostok from the Ridge B ice divide located ∼ Cited by: Using surface velocities to calculate ice thickness and bed topography: a case study at Columbia Glacier, Alaska, USA Full glacier coverage velocity ﬁelds for were determined with standard feature- and speckle-tracking Using surface velocities to calculate ice thickness acquired by a long range terrestrial laser scanner Riegl LPM, which offers a maximum range of 4 km when measuring on glacier ice.
Velocity vectors are determined by applying 2D matching techniques to the point clouds interpolated to a regular Size: KB. Calculating Melt from Energy Budget Measurements Simple Approaches to Modelling Melt Increase of Ablation with Warming Importance of the Frequency of Different Weather Conditions v Energy Budget Regimes Further Reading Chapter 6 Glacial Hydrology Introduction Permeability of Glacier Ice Effective.
Randolph Glacier Inventory – A Dataset of Global Glacier Outlines: Version Global Land Ice Measurements from Space, Boulder Colorado, USA. Digital Media. The first 14 authors, listed in alphabetical order, were responsible for the design and initial assembly of the RGI and for the necessary software development.
SAR interferometry and offset tracking are complementary techniques for ice flow velocity measurement . And feature tracking is also meaningful to be a reference for the analysis of absolute flow Size: KB. Received 24 April ; revised 6 June ; accepted 6 June ; published XX Month [ 1 ] An ultrasonic depth gauge was used to measure snowfall over a 2-year period near the equilibrium.
Measurements of velocity show that ice in the center of the glacier moves ____then that is at the sides, And the uppermost layer moves ____than the lower layers Faster, faster A____ Is a glacier cut valley that partly flooded as sea level rose.
A method to estimate the ice volume and ice-thickness distribution of alpine glaciers This shows the potential of the method for estimating the ice-thickness distribution of alpine glaciers without the use of direct measurements.
Glacier Proﬁles Measurements DEMs Rhone 13,Cited by: the up-rise of sea ice of which type is thought to be land-fast ice to exert repulsive force against the pushing glacier. There were other glaciers and sea ice that moved to the same direction, suggesting that the sea ice in these regions was land-fast ice weakly harnessed to sea bottom or pack ice File Size: KB.
In western Greenland and in some mountain glacier ar21, flow velocities have slowed over long periods but elsewhere changes are not known due to a lack of velocity data. Ice Cited by: NR final. STUDY. PLAY. Pleistocene Epoch b)Holocene Epoch c)Miocene Epoch d)Oligocene Epoch.
Measurements of what isotopes in glacier ice enable scientists to estimate the air temperature when that snow accumulated, the trapped air also provides a. The field developed rapidly, with new applications and methods arising for interferometric velocity measurements of the Arctic and Antarctic ice sheets and streams (Kwok et al.,Rignot et al., ), alpine glaciers (Mattar et al.,Cumming and Zhang,Li et al., ) including the subject of this study, the Aletsch Glacier Cited by: Simulation of total ice melt runoff by elevation zone, interaction with 0°C isotherm and zonal ice melt production in relation to the mean.
51 Outline and extent of elevation band - m a.s.l, the zone generating greatest ice melt volume during Ablation season .Along the Saliymek glacier and Kalaxong glacier profiles, glacier velocity is identified roughly two sections. In the first section, glacier velocity increases progressively from about 7 m a-1 at the elevation of about m to a maximum, while showing small-scale spatial variations.