High-precision temperature logging at GISP2, Greenland, May 1992



Publisher: U.S. Dept. of the Interior, U.S. Geological Survey in [Reston, Va.]

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  • Earth temperature -- Greenland
  • Edition Notes

    Other titlesHigh precision temperature logging at GISP2, Greenland, May 1992
    Statementby Gary D. Clow, Richard W. Saltus, and Edwin D. Waddington
    SeriesOpen-file report -- 95-490, U.S. Geological Survey open-file report -- 95-490
    ContributionsSaltus, R. W., Waddington, Edwin D, Geological Survey (U.S.)
    The Physical Object
    FormatMicroform
    Pagination1 v
    ID Numbers
    Open LibraryOL15006739M

During a logging experiment, the resistance of the thermistor network was determined using a Wheatstone bridge prior to After that time, a 4-wire resistance measurement was made using a commercial digit multimeter (DMM). This document was prepared from the results of the international ITASE Workshop held in Cambridge, U.K. in August, , together with excerpts from the US ITASE Workshop held in Baltimore, Maryland, USA in May high-precision borehole temperature logging system used at GISP2, Greenland and Taylor Dome, Antarctica, Journal of.   The extent of climate variability during the current interglacial period, the Holocene, is still debated. Temperature records derived from central Greenland ice cores show one significant.   The MC-FIT cooling trend conforms with Northern Hemisphere and European temperature records such as (i) the Greenland Summit (GISP2) temperatures based on combined nitrogen and argon isotopes, (ii) the Mediterranean SST of the south Iberian Margin based on alkenones, and (iii) reconstructed long-term trends of multiproxy mean temperature [e.g Cited by: 3.

The Younger Dryas (aro to 11, years BP) was a return to glacial conditions after the Late Glacial Interstadial, which temporarily reversed the gradual climatic warming after the Last Glacial Maximum (LGM) started receding aro BP. It is named after an indicator genus, the alpine-tundra wildflower Dryas octopetala, as its leaves are occasionally abundant in late glacial. To address this need, we reconstruct Greenland surface snow temperature variability over the past years at the GISP2 site (near the Summit of the Greenland ice sheet; hereafter referred to as Greenland temperature) with a new method that utilises argon and nitrogen isotopic ratios from occluded air bubbles. References. Alley, R.B., and I.M. Whillans, , Changes in the West Antarctic ice sheet, Science , Alley, R.B., D. Meese, C.A. Shuman, A.J. Gow, K. a. The most accurate ice cores were taken in Summit, Greenland: 1. GISP2 (Greenland Ice Sheet Project Two) taken in , and 2. GRIP (the Greenland Ice Core Project), taken in cores. The GISP2 core is m deep and is the deepest ice core in the world. The GRIP core is m deep.

USGS Pol ar Temperature Logging System, Description and Measurement Uncertainties. By Gary D. Clow. Abstract. This paper provides an updated technical descrip-tion of the USGS Polar Temperature Logging System (PTLS) and a complete assessment of the measurement uncertainties. This measurement system is used to ac-. Dye 3 is an ice core site and previously part of the Distant Early Warning (DEW) line, located at (, masl) in GreenlandAs a DEW line base, it was disbanded in years / An ice core is a core sample from the accumulation of snow and ice that has re-crystallized and trapped air bubbles over many years. The composition of these ice cores, especially the presence of hydrogen and oxygen. The Danish Meteorological Institute is reporting that on Tuesday, J the mercury rose to C ( F) at a station in Greenland, the highest temperature measured in the Arctic country.   The estimated average Greenland snow temperature over the past years was −°C with a standard deviation of °C and exhibited a long‐term decrease of roughly °C, which is consistent with earlier studies. The current decadal average surface temperature (–) at the GISP2 site is −°C. Kobashi et al.,

High-precision temperature logging at GISP2, Greenland, May 1992 Download PDF EPUB FB2

High-Precision T emperature Logging at GISP2, 21 by the time of the temperature log. As the borehole was deepened, the fl uid column in the hole moved down wards, ad. High-Precision Temperature Logging at GISP2, Greenland, May by Gary D.

Clow1, Richard W. Saltus2, and Edwin D. Waddington3 Open-File Report This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards. Use of trade, product, or firm names is forCited by: 1.

High-precision temperature logging at GISP2, Greenland, May Open-File Report By: G.D. Clow, R.W. Saltus, and E.D. Waddington. U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY High-Precision Temperature Logging at GISP2, Greenland, May by Gary D.

Clow1, Richard W. Saltus2, and Edwin D. Waddington3 Open-File. Get this from a library. High-precision temperature logging at GISP2, Greenland, May [G D Clow; R W Saltus; Edwin D Waddington; Geological Survey (U.S.)].

High-precision temperature logging at GISP2, Greenland, May Clow, G.D., R.W. Saltus and E.D. Waddington USGS Open File Report, No. We describe a logging system capable of making high-precision temperature measurements and. A new high-precision borehole-temperature logging system used at GISP2, Greenland, and Taylor Dome, Antarctica Article Greenland Available) in Journal of Glaciology January with This file is licensed under the Creative Commons Attribution-Share Alike Unported license.: You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

You may do so in any reasonable manner, but not in. A new high-precision borehole-teDlperature logging systetn used at GISP2, Greenland, ). Thus, to enhance the ability to detect The availa bility of high-precision temperature data may.

Introduction. Greenland ice-core records share a strong and consistent expression of past climate events in the North Atlantic region, e.g.

the millennial-scale climate oscillations during the glacial period known as Dansgaard–Oeschger (D–O) events (Rasmussen et al.,and references therein).The records offer an outstanding time-resolution of past climate events (e.g.

Steffensen et Cited by: After optimal filtering of the GISP2 measurements, the data power spectrum falls to 10% of maximum as frequencies drop below Hz (periods of seconds, equivalent to about 20 m in.

Greenland temperature and oxygen isotopes (GISP2, GRIP, and NGRIP) for the past years. From the top, the Greenland temperatures from this study are presented as a ‐year running mean (red), with the GRIP borehole temperature inversion (blue dashes) [Dahl‐Jensen et al., ] and the GISP2 elevation change (green) [Vinther et al., ].Cited by:   Clow, Gary D; Saltus, Richard W; Waddington, Edwin D (): A new high-precision borehole-temperature logging system used at GISP2, Greenland, and Taylor Dome, Antarctica.

Journal of Glaciology, 42, Author: Gary D Clow. High-precision temperature logging at GISP2, Greenland, May [microform] / by Gary D. Clow, Richard View of the islands in Wolstenholme Sound, Dalrymple Rock bearing true NE.

by E., Cape Stair NNE., Booth. Greenland temperature and oxygen isotopes (GISP2, GRIP, and NGRIP) for the past years. From the top, the Greenland temperatures from this study are presented as a year running mean (red), with the GRIP borehole temperature inversion (blue dashes) [Dahl-Jensen et al., ] and the GISP2 elevation change (green) [Vinther et al., ].δ 18 O ice of GISP2 (blue).

By Andy May. InRichard Alley released an ice core temperature reconstruction for Central Greenland using Oxygen isotope ratios. He describes the technique used here.I used this ice core proxy data in a previous post “Climate and Civilization for the past 4, years.”Since Alley’s data stops atI spliced the Greenland HadCRUT surface temperature data on the end to show the.

We describe a high-precision ( mK) borehole-temperature (BT) logging system developed at the United States Geological Survey (USGS) for use in remote polar regions. We discuss calibration, operational and data-processing procedures, and present an analysis of the measurement errors.

The system is modular to facilitate calibration procedures and field repairs. Method. The use of volcanic deposits is the most direct and well-understood method for high-resolution synchronization of ice records (e.g., Langway et al.,Wolff et al.,Udisti et al.,Bay et al., ).A study of recent volcanic deposits in Antarctica shows that the sulphate peaks typically start 1–3 yr after the eruption and last 1–3 yr (Palmer et al., ).Cited by: History of temperature changes in central Greenland over the last 40 years, from the GISP2 core, showing very large and probably abrupt changes.

History of temperature changes in central Greenland over the last 40 years, from the GISP2 core, showing very large and probably abrupt changes. Files Meta Data. Type: Language: Updated.

Figure 3. Greenland temperature and oxygen isotopes (GISP2, GRIP, and NGRIP) for the past years. From the top, the Greenland temperatures from this study are presented as a ‐year running mean (red), with the GRIP borehole temperature inversion (blue dashes) [Dahl‐ Jensen et al., ] and the GISP2 elevation change (green) [Vinther et al., ].

d18Oice of GISP2 (blue). Jason Box is one of the most prominent scientists working on Greenland and he has a recent paper reconstructing Greenland temperatures for the period (Box, Jason E., Lei Yang, David H.

Bromwich, Le-Sheng Bai, Greenland Ice Sheet Surface Air Temperature Variability: – Deconvolution of continuous borehole temperature logs: Example from the Greenland GISP2 ice core hole Saltus, R.W. and G.D. Clow USGS Open File Report, No.Cs gamma-rays from fallout detected at Summit, Greenland Dunphy, P.

and J. The 18 O/ 16 O profile of a m long ice core through Taylor Dome, Antarctica, shows the climate variability of the last glacial–interglacial cycle in detail and extends at least another full cycle.

Taylor Dome shares the main features of the Vostok record, including the early climatic optimum with later cool phase of the last interglacial period in by: The same observation holds for a comparison between the mean tree-ring width of the pines and the GRIP Greenland ice core record of δ 18 O (Johnsen et al., ; Dansgaard et al., ), which is seen as a proxy for temperature, and also the electric conductivity record (ECM) of GISP2 (Taylor et al., ).

Low values of the ECM signal are Cited by: PUBLICATIONS (Peer-reviewed journals and book chapters) – E.D. Waddington Holocene ice thickness changes in central Greenland from the GISP2 ice core data.

Annals of R.W. Saltus, and E.D. Waddington. A new, high-precision borehole temperature logging system used at GISP2, Greenland, and Taylor Dome, Antarctica.

Journal. Temperature changes recorded in the GISP2 ice core from the Greenland Ice Sheet show that the magnitude of global warming experienced during the past century is insignificant compared to the magnitude of the profound natural climate reversals over the p years, which preceded any significant rise of atmospheric CO 2.

High variability of Greenland surface temperature over the past years estimated from trapped air in an ice core Takuro Kobashi,1,2 Kenji Kawamura,3 Jeffrey P.

Severinghaus,1 Jean!Marc Barnola,4,5 Toshiyuki Nakaegawa,6 Bo M. Vinther,7 Sigfús J. Johnsen,7 and Jason E. Box8 Received 26 August ; revised 10 October ; accepted 11 October ; published 10 November File Size: 1MB. GISP2. There was a follow-up U.S. GISP2 project, which drilled at a glaciologically better location on the summit of the ice sheet.

This hit bedrock (and drilled another m into bedrock) on July 1, after five years of drilling, while European scientists produced a parallel core in the GRIP project. GISP2 produced an ice core meters in depth, the deepest ice core recovered in.

The method is based on the inversion of stabilized, high precision deep borehole temperature logs, which are in thermal equilibrium with surrounding rock. Deep down to some 2-km depth perturbation of the heat flow could be caused by warming since recent glaciations ending some 12–13 kyr ago in Canada (Ritchie ).Cited by: 5.

Physical processes of shallow mafic dike emplacement near the San Rafael Swell, Utah / by Paul T. Delaney and Anne E. Gartner. High-precision temperature logging at GISP2, Greenland, May Clow, G. I Physical processes of shallow mafic dike emplacement near the San Rafael Swell, Utah.

Delaney, Paul T. Greenland ice cores show natural swings are large and warming means less storms A new high resolution ice core in Greenland surprises even me with the wild swings and detail.

The authors are discussing wind direction and storms that occurred in specific ye years ago, which is extraordinary information if accurate/10(67).Gary Clow, Saltus, R. W., Waddington, E. D. A new high-precision borehole temperature logging system used at GISP2, Greenland and Taylor Dome, Antarctica.

Journal of Glaciology, Gary Clow, Waddington, E. D. Acquisition of borehole temperature measurements from Taylor Dome and the Dry Valleys for paleoclimate.In the context of this research, it has often been suggested that a warm epoch occurred in much of northern Europe, the north Atlantic, and other parts of the world, from around the ninth through the fourteenth centuries, and that this was followed by a decline in temperatures culminating in a “Little Ice Age” from about to (see e by: