scholarly journals A new 122 mm electromechanical drill for deep ice-sheet coring (DISC): 5. Experience during Greenland field testing

2007 ◽  
Vol 47 ◽  
pp. 54-60 ◽  
Author(s):  
Jay A. Johnson ◽  
William P. Mason ◽  
Alexander J. Shturmakov ◽  
Scott T. Haman ◽  
Paul J. Sendelbach ◽  
...  
Keyword(s):  
National Science Foundation ◽  
Ice Sheet ◽  
Ice Cores ◽  
Field Testing ◽  
The Us ◽  
National Science ◽  
Drill System

AbstractThe Deep Ice Sheet Coring (DISC) drill developed by Ice Coring and Drilling Services under contract with the US National Science Foundation is an electromechanical ice-drill system designed to take 122mm ice cores to depths of 4000 m. The new drill system was field-tested near Summit camp in central Greenland during the spring/summer of 2006. Testing was conducted to verify the performance of the DISC drill system and its individual components and to determine the modifications required prior to the system’s planned deployment for coring at the WAIS Divide site in Antarctica in the following year. The experiments, results and the drill crew’s experiences with the DISC drill during testing are described and discussed.

scholarly journals A new 122 mm electromechanical drill for deep ice-sheet coring (DISC): 4. Drill cable

2007 ◽  
Vol 47 ◽  
pp. 51-53 ◽  
Author(s):  
Alexander J. Shturmakov ◽  
Paul J. Sendelbach
Keyword(s):  
Optical Fiber ◽  
Data Transmission ◽  
National Science Foundation ◽  
Electrical Power ◽  
Ice Sheet ◽  
Fiber Core ◽  
Steel Strength ◽  
The Us ◽  
National Science ◽  
Fluid Penetration

AbstractThe deep ice-sheet coring (DISC) drill developed by Ice Coring and Drilling Services (ICDS) under contract with the US National Science Foundation requires a drill cable capable of transmitting high amounts of electrical power as well as high rates of data. The DISC cable was designed and manufactured by the Rochester Corporation to core ice to depths of 4000 m. In addition to the steel strength members to support the drill, the cable has copper wires for conducting electrical power for the drill sonde cutter, pump motors and the sonde electronics and an optical fiber core for data transmission. The outer steel layers are filled with a special compound to minimize fluid penetration of the cable.

scholarly journals RAM-2 Drill system development: an upgrade of the Rapid Air Movement Drill

2020 ◽  
pp. 1-10
Author(s):  
Christopher Gibson ◽  
Grant Boeckmann ◽  
Zachary Meulemans ◽  
Tanner Kuhl ◽  
Jim Koehler ◽  
...  
Keyword(s):  
National Science Foundation ◽  
System Development ◽  
Air Movement ◽  
Access Hole ◽  
The Us ◽  
National Science ◽  
Drill System ◽  
The U.S

Abstract Significant upgrades to the Rapid Air Movement (RAM) Drill were developed and tested by the US Ice Drilling Program in 2016 through 2020 for the U.S. National Science Foundation. The design of the system leverages the existing infrastructure of the RAM Drill with the goal of greatly reducing the logistical burden of deploying the drill while maintaining the ability to drill an access hole in firn and ice to 100 m in 40 min or less. In this paper, characteristics of the drill are described, along with a description of the drill performance during the testing at Raven Camp in Greenland and at WAIS Divide Camp in Antarctica.

scholarly journals A new 122 mm electromechanical drill for deep ice-sheet coring (DISC): 3. Control, electrical and electronics design

2007 ◽  
Vol 47 ◽  
pp. 41-50 ◽  
Author(s):  
Nicolai B. Mortensen ◽  
Paul J. Sendelbach ◽  
Alexander J. Shturmakov
Keyword(s):  
Supervisory Control ◽  
Ice Sheet ◽  
Ice Cores ◽  
Fluid Temperature ◽  
Power Modules ◽  
The Us ◽  
Control Electronics ◽  
And Control ◽  
Supervisory Control System ◽  
Drill System

AbstractThe deep ice-sheet coring (DISC) drill developed by Ice Coring and Drilling Services under contract to the US National Science Foundation is an electromechanical drill designed to take 122 mm ice cores to depths of 4000 m. Electronic, electrical and control systems are major aspects of the DISC drill. The drill sonde, the down-hole portion of the drill system, requires approximately 5 kW of d.c. power for the cutter and drill motors and instrumentation. Power is transmitted via a drill cable from a modified, commercially available surface d.c. power supply operating at 1000V to power modules in the sonde instrumentation section. These modules regulate the power to the motors to 300 V d.c. and to lower voltages for the instrumentation and control electronics. Cutter and pump motors are controlled by electronics that include motor controllers. There are 20 distinct sensors in the drill sonde which measure conditions such as hole fluid temperature, motor fluid temperature, drill orientation, etc. On-board electronics facilitate communication of control commands and data between the surface and the drill sonde. Electronics also play an integral part in the operation of surface equipment such as the winch in raising and lowering the sonde in the borehole. Overall control of the DISC drill system is provided by a PC-based supervisory control system that allows the drill operators to monitor and control all aspects of the drilling operation.

Radio echo and magnetic sounding of the Antarctic ice sheet, 1978–79

Polar Record ◽  
1980 ◽  
Vol 20 (124) ◽  
pp. 43-51 ◽  
Author(s):  
D. J. Drewry ◽  
D. T. Meldrum ◽  
E. Jankowski
Keyword(s):  
National Science Foundation ◽  
Ice Sheet ◽  
Geophysical Investigation ◽  
Antarctic Ice Sheet ◽  
The Us ◽  
National Science ◽  
Radio Echo Sounding ◽  
Polar Research Institute ◽  
The Antarctic

During December 1978 the Scott Polar Research Institute (SPRI) undertook its sixth and final season of long-range airborne radio echo sounding (RES) and magnetometry in Antarctica in cooperation with the US National Science Foundation Division of Polar Programmes (NSF-DPP) and the Electromagnetics Institute of the Technical University of Denmark (TUD). The 1978–79 season (DF–79) was part of a long-term programme of glaciological and geophysical investigation of the Antarctic ice sheet (Drewry and Meldrum 1978a; 1978b). The broad aims have been to extend a 100-km grid network over Antarctica for a study of surface form, thickness, internal structure, rheology, thermodynamics, electrical properties, basal conditions and processes, and sub-ice geology.

The Challenge of Funding Interdisciplinary Research

2017 ◽  
Author(s):  
Thomas König ◽  
Michael E. Gorman
Keyword(s):  
Interdisciplinary Research ◽  
Research Funding ◽  
National Science Foundation ◽  
Interdisciplinary Collaboration ◽  
Public Research ◽  
Funding Agencies ◽  
The Us ◽  
National Science ◽  
The One ◽  
The Eu

Public research funding agencies today are required to address proactively interdisciplinary research. “The Challenge of Funding Interdisciplinary Research: A Look Inside Public Research Funding Agencies” looks specifically at two funding agencies—the US National Science Foundation (NSF) and the EU European Research Council (ERC)—and how these bodies promote interdisciplinarity, on the one hand, and how they claim to identify it, on the other. Inevitably, this gives the funding agencies some definition power over what interdisciplinary research actually is or should be. At the same time, there are organizational constraints that restrict the funding agencies’ capacity to fully embrace novel ways of interdisciplinary collaboration and investigation.

Government Funding of E-collaboration Research in the European Union

2009 ◽  
pp. 142-150
Author(s):  
Ned Kock ◽  
Pedro Antunes
Keyword(s):  
European Union ◽  
Information Society ◽  
National Science Foundation ◽  
Government Funding ◽  
The European Union ◽  
Government Investment ◽  
The Us ◽  
National Science ◽  
Us Government ◽  
The Eu

Government funding of e-collaboration research in both the US and EU seems to be growing. In the EU, a key initiative to promote governmental investment in e-collabo-ration research is the Collaboration@Work initiative. This initiative is one of the EU’s Information Society Technologies Directorate General’s main priorities. In the US, government investment in e-collaboration research is channeled through several gov-ernment branches and organizations, notably the National Science Foundation. There are key differences in the approaches used for government funding of e-collaboration research in the EU and US. Some of these differences are discussed here, as well as related implications.

A Knowledge Preservation and Re-Use Tool Based on Context-Driven Reasoning

2015 ◽  
Vol 24 (05) ◽  
pp. 1550020 ◽  
Author(s):  
Avelino J. Gonzalez ◽  
Brian Sherwell ◽  
Johann Nguyen ◽  
Brian C. Becker ◽  
Víctor Hung ◽  
...  
Keyword(s):  
Collaborative Research ◽  
National Science Foundation ◽  
Primary Objective ◽  
Basic Knowledge ◽  
The Us ◽  
National Science ◽  
Long Time ◽  
Representation Structure ◽  
Contextual Graphs ◽  
Knowledge Preservation

This article describes a knowledge preservation and re-use tool designed to capture the knowledge of a specific individual at the US National Science Foundation, for later retrieval by successors after his retirement. The system is designed in a Q&A format, where it is sufficiently intelligent to ask for clarifying questions. The primary objective was to create a system that would result in acceptance of the system by the users. The domain of interest to be preserved and re-used was programmatic knowledge about the NSF Industry/University Collaborative Research Centers (I/UCRC) Program, and more specifically, the knowledge of its long-time director, Dr. Alex Schwarzkopf. The system is called AskAlex and it uses a trio of techniques to accomplish its objectives. Contextual graphs (CxG) are used as the basic knowledge representation structure. CxG’s are assisted by a search engine and an ontology of terms to help find the proper contextual graph that can best answer the question being asked. Evaluations with users and potential users generally confirm our selection and provided some guidance for improvements in the system.

scholarly journals Chemical biology at the US National Science Foundation

2008 ◽  
Vol 4 (9) ◽  
pp. 511-514 ◽  
Author(s):  
Wilfredo Colón ◽  
Parag Chitnis ◽  
James P Collins ◽  
Janice Hicks ◽  
Tony Chan ◽  
...  
Keyword(s):  
National Science Foundation ◽  
Chemical Biology ◽  
The Us ◽  
National Science
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