Page 1. ! )TCFILEOPY I In, Ice Formation in Frequently Transited Navigation Channels ... Ice Formation In Frequently Transited Navigation Channels ...
DTIC Science & Technology
... Accession Number : ADA162926. Title : Determining the Effectiveness of a Navigable Ice Boom. ... Marys River directly downstream of the boom. ...
33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Closing procedures and ice navigation. 401.97 Section 401.97 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY...
Code of Federal Regulations, 2010
33 Navigation and Navigable Waters 3 2009-07-01 2009-07-01 false Closing procedures and ice navigation. 401.97 Section 401.97 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY...
... Descriptors : *BOREHOLES, *GEODETIC SURVEYS, *ICE CAPS, COLD WEATHER OPERATIONS, SITES, FIELD TESTS, ICE, NAVIGATION ...
Deformed ice features such as ridged ice, rafted ice, and brash ice present obstacles to ship navigation. The resistance to ship motion depends in part on the degree to which the deformed ice and water near the water surface consolidate. A series of ice ...
National Technical Information Service (NTIS)
Page 1. Ice Engineering ... Adhesion of ice to surfaces creates problems for many industries, including hydropower and navigation. ...
...33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01...false Closing procedures and ice navigation. 401.97 Section...97 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT...97 Closing procedures and ice ...
Code of Federal Regulations, 2011
A long-term research project on the efficiency of winter navigation in the Baltic was initiated by Helsinki University of Technology and Finnish Board of Navigation in 1990. The aim of the project is to define and study the factors affecting the ice navig...
Tutorials are presented on history of ice forecasting, thermal regime of the Lakes, physical processes affecting Lake ice, ice season progress, outlook for closing and opening of navigation, forecasting initial ice formation, synoptic analysis of ice cond...
The performance of a navigable ice boom was studied by monitoring the progression of the leading edge of the unconsolidated ice cover over a reach of the St. Marys River directly downstream of the boom. Ice and hydraulic data were obtained for four winter...
... Accession Number : ADA412062. Title : Navigation Conditions in Lower Lock Approach of Ice Harbor Lock and Dam, Snake River, Washington. ...
... Keywords: Booms equipment, Locks waterways, Allegheny River, Monongahela River, River navigation, Winter navigation. (edc). ...
... A modest field study program on the booms was conducted for the ensuring four winters to determine ice and boom interaction and the effects of ...
... section, and 78% of the downstream section. Keywords: Aerial photography, Remote sensing; River ice, Winter navigation. ...
Apr 16, 1998 ... Skip navigation links. Process Developed for Forming Urethane Ice Models. A new process for forming ice shapes on an aircraft wing was ...
NASA Website
As part of the River Ice Management (RIM) program, several ice-affected, navigable rivers were studied to find locations where ice problems occur on a regular basis. The rivers studied were the Illinois River and the Ohio River and its tributaries, especi...
Questions concerned with the theory and calculation of the strength of hull structures of ships sailing in ice are considered. A method for determining the ice loads which act on a ship's hull as a result of navigation conditions, ice strength and charact...
The movement of Arctic ice floes is receiving greater interest today than ever before. While the tracking of ice floes is important to aiding in Arctic navigation, a knowledge of the dynamics of sea ice is also vital to understanding critical environmenta...
Ice conditions on inland rivers can change rapidly and adversely affect navigation. The ice maps in this atlas were prepared to document the 1984-85 ice conditions on those reaches of the Ohio, Allegheny and Monongahela Rivers that are included in study a...
This report describes flow-control methods for reducing ice problems in rivers. Objectives include reducing ice interference with winter hydroelectric production and navigation, ice jam flood mitigation, as well as ensuring minimum winter flows for fish a...
The report describes the development of a river ice prow to be attached to a towboat for opening ice-free navigation channels or for ice management in the vicinity of the locks and dams on the northern rivers of the United States (Illinois, Ohio and Upper...
The purpose of the study was to identify characteristics of slush ice and to develop techniques for their measurement. Slush ice is a mixture of fresh water ice and water. It becomes an impediment to navigation when wind and water current transport the ic...
As part of the US Army Corps of Engineers, the Ice Engineering Group solves problems stemming from ice and its effects on equipment and operations. This broad area includes ice jams that impede maritime navigation, maintenance issues, and "the destructive forces that moving ice exerts on river ...
NSDL National Science Digital Library
The NASA IceBridge INS L0 Raw Inertial Navigation System Data (IPUTI0) data set contains Inertial Navigation System (INS) readings, including latitude, ...
... Descriptors : *SURFACE NAVIGATION, *INLAND WATERWAYS, *GREAT LAKES, WINTER, ICE, LAKE SUPERIOR, WATER TRAFFIC, LAKE ERIE ...
This article describes the Great Lakes Ice Season for 1974-75. The 1974-75 Great Lakes Ice Season, like the previous three seasons, was warmer than normal. Considerably less navigationally significant ice formed than normal. The lack of ice and national e...
... at Fletcher's ice island (T-3); Theoretical studies of long-range sound ... NAVIGATION SATELLITES, ICE ISLANDS, OCEANOGRAPHY, MARINE ...
... z ; (for the Greenland ice-cap) to 3 X 10 mho/meter. Confidence ... frost, granite, or ice caps present .uch a high impedance ...
... Landsat Multispectral Scanner, Thematic Mapper and Return Beam Vidicon images were used to map ice distributions along the navigable river ...
Abstract: The collection consists of approximately 50000 high-quality negatives and transparencies showing ice cover impact on navigation or hydroelectric ...
Jun 1, 2011 ... Skip all navigation and jump to content, Jump to site navigation ... the new ice model handles obstructions in a much more realistic way. ...
...way of the tiller, excluding strengthening for navigation in ice; and (4) Designed so that they will not be damaged when...way of the tiller, excluding strengthening for navigation in ice. (d) No auxiliary means of steering is required on a...
... and, through a field review group, was distributed to lock and dam facilities on the Allegheny, Monongahela, Ohio, Kanawha, Kaskaskia, and ...
... SURVEYS, SAFETY, PATROL CRAFT, COAST GUARD RESEARCH, NAVIGATIONAL AIDS, WARNING SYSTEMS, NEWFOUNDLAND(PROVINCE ...
... This maintenance includes the repair of dikes and revetments damaged as a result of floods, ice, floating debris, impacts from navigation, or ...
... AIRBORNE, NAVIGATION, RADAR ANTENNAS, RADAR PULSES, AIRCRAFT ANTENNAS, NORTHWEST TERRITORIES, ICEBREAKERS. ...
Extension of the navigation season on the Great Lakes necessitated finding the added weight and cost of ice strengthening the hull of existing or proposed ships. Using the American Bureau of Shipping rules Section 29, 'Strengthening for Navigation in Ice,...
... Navigation and Navigable Waters 2 2010-07-01 2010-07-01... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...constituent parts, the LHG, and any ice formed on it; (6) Have...constituent parts, the LHG, and any ice formed on it; (4)...
Each winter ice forms on rivers streams, and navigable waterways, causing many problems through its effects on the operation of hydraulic control structures, locks and dams, hydropower plants, and water intakes. Ice covers increase river stages by present...
Digital Ice Concentrations Grid Point Dataset for Canadian Navigable Waters ... includes weekly ice concentration and ice age/type data for the period 1959 to 1983. .... Responsible NASA Official: Lola Olsen. Last Updated: September 2011.
For Toy-Like NASA Robots in Arctic, Ice Research is Child's Play. July 15, 2008. Several snowmobiles navigated speedily over arctic ice and snow in Alaska's ...
are here: Skip Navigation Links Home � News & Features � Arctic Ice Melt May Reduce Red Tides in the Gulf of Maine Arctic Ice Melt May Reduce Red Tides in the Gulf of Maine...
Science.gov Websites
The remote measurement of sea ice thickness from a mobile platform has been a goal of researchers and organizations, such as the U.S. Coast Guard, for many years. Ice thickness data is needed over large areas for icebreakers operation and navigation. The ...
Sea ice forms in the Baltic Sea annually. Coastal and archipelago areas are covered by landfast ice, while further offshore the ice drifts under the influence of winds and currents. The length scale of the Baltic Sea basins is 100 km and the scale of the ice thickness is � m, and the characteristics of the ...
NASA Astrophysics Data System (ADS)
Ice problems developed in the Sault Ste. Marie, Michigan, portion of the St. Marys River because of winter navigation Passing ships and natural influences moved ice from Soo Harbor into Little Rapids Cut in sufficient quantities to jam, cause high water i...
...vessel navigating through an ice field. (e) Winter Navigation...closes or opens these channels as ice conditions require after...business, must use naturally formed ice bridges for transportation...control of its tow south of Gros Cap Reef Light; (2) Not...
The performance of advanced satellite navigation used aboard Swedish and Soviet icebreakers is reported. It is shown that the ships' position was obtained with very high precision in spite of frequent fog. Further development of remote sensing satellite s...
For example, using a command-line FTP program, you can download the INS L0 Raw Inertial Navigation System data files using the following commands: %ftp ...
...33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01...3 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT...extends more than 35.5 m above water level. (c) No vessel...or delays during periods of ice cover. (68 Stat....
...33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01...2 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT...is appropriate to weather and ice conditions or vessel traffic...through a lock or through the waters enclosed by the approach...
...33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01...32 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT...be terminated when the flood waters recede below bankfull, absent...flooding. (3) Removal of ice jams is a local...
33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01...Section 164.74 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND...6) Except on board a vessel towing in ice on Western Rivers or one using a...
... Navigation and Navigable Waters 2 2010-07-01 2010-07-01... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...as approaching hurricanes or ice floes, in which the facility...retrieving persons from the water during an evacuation;...
A major advance in the extension of navigation on the Great Lakes was accomplished during the 1972-73 ice season, thanks to a mild winter and close cooperation between private industry and government agencies. An additional week was added to the fall seas...
The Great Lakes 1971-72 ice season was notable for an unseasonably warm fall and early winter, with an abrupt reversal in January to a colder than normal regime which persisted through midspring. The winter navigation season was again extended through Jan...
The research includes a collection of Russian translations on the Arctic and Antarctic regions. Included are reports on ice; sea ice; snow; meteorology; geomagnetism; atmospheric physics; oceanographic data; and exploration and navigation.
Jul 15, 2008 ... For Toy-Like NASA Robots in Arctic, Ice Research Is Child's Play ... field tests of the robots' navigation and communications capabilities in June ...
Sep 12, 2011 ... Ice Sheet System Model 3.3. C/C++ code documentation ... Navigate the tabs above and browse through ISSM's C++ source code, ...
Jul 15, 2008 ... Several snowmobiles navigated speedily over arctic ice and snow in Alaska's outback in late June. This scene might seem ordinary except that ...
The author describes different methods for satisfactory position-fixing and navigation in and under sea ice, all of great importance for exploration and transportation of natural resources, such as oil, gas and minerals, and he emphasizes the importance o...
In order to provide year-round navigation in the Gulf of Tartary, a thorough study of the dynamics of pack ice is necessary, as well as measurements of its physical characteristics. The observation program was designed to acquire data for the calculation ...
Ice was the topic under discussion at Walsh Cottage during the 2006 Geophysical Fluid Dynamics Summer Study Program. Professor Grae Worster (University of Cambridge) was the principal lecturer, and navigated our path through the fluid dynamics of icy proc...
Ice Personal tools You are here: Home � USNO � Tours & Events � Sky This Week USNO Logo USNO Navigation Folder Tour Information Folder USNO Scientific Colloquia...
Mar 6, 2007 ... Submarine exploration of the North Pole region; history problems, positioning and piloting, J. of Navigation, ...
... conditions were representative of those that could occur during ice or debris passage, malfunction of a gate a navigation accident or vandalism. ...
Sep 1, 2009 ... During the Cold War, the submarines collected upward-looking sonar profiles, for navigation and defense, and converted the information into ...
This film documents student hiking trips conducted by the University of Colorado ... Russia, produces sea ice charts for safety of navigation in the polar ...
Advanced Search... Sections Home Time Earth Orientation Astronomy Meteorology Oceanography Ice Personal tools You are here: Home � Oceanography NOOC Logo NOOC Navigation...
Ardo X. Meyer, traverse navigator and geomagnetic observer, celebrating at South Pole Station after completing traverse and two months on the ice cap.
NOAA Photo Library
Oceanography Ice Personal tools You are here: Home � USNO � James M. Gilliss Library � Library History USNO Logo USNO Navigation Form Folder Ask the Librarian Link...
Oceanography Ice Personal tools You are here: Home � USNO � James M. Gilliss Library � Library Collections USNO Logo USNO Navigation Form Folder Ask the Librarian Link...
The J-CAD buoys drift with the ice pack, collecting navigational, atmospheric, and oceanographic measurements, and transmitting the data via satellite. ...
Skip Navigation Links The Library of Congress >> Especially for Researchers >> Research Centers ScienceReference Services (Science, Technology, and Business Division) Home >>...
Meteorology Oceanography Ice Personal tools You are here: Home � FNMOC � Climatology and Archived Data FNMOC Logo FNMOC Navigation Folder Meteorology Products Folder...
ture, the broadening effect on the radar- ... polar ice, open water areas, and Great Lakes ... navigation of U.S. shipping and maritime in- ...
... missions within the five program areas of Ice Management, Search and Rescue, Aids to Navigation, Marine Environmental Protection and Safety ...
Oceanography Ice Personal tools You are here: Home � USNO � About Us � A Brief History of the Naval Observatory Navigation Page A Brief History of the Naval Observatory...
Skip Navigation (press 2) .... The primary factors that affected the performance of the cyclic de-icing heating system were ambient air .... PROPELLERS (190) [x] ...
An ice boom at the head of Little Rapids Cut was first installed as part of the Great Lakes and Saint Lawrence Seaway Navigation Season Extension Demonstration Program. to help stabilize the ice cover in Sault Harbor and thus moderate ice problems in Litt...
The four general subject areas were: Arctic Operations and acoustics; Buoys; and Sea Ice. Included titles are: MIZEX(Marginal Ice Zone Experiment) Operations; International Ice Patrol Operations; Remote Sensing for Polar Icebreaker Navigation in Sea Ice; ...
An ice-breaking apparatus for use in ships and barges operating on icy waters, including nozzles for jetting high-pressure fluid, is disclosed. By impinging force or cavitation caused by the high-pressure fluid jetted from the nozzles, grooves or cracks are formed on an ice floe. The ice floe then is broken from these grooves or cracks ...
Energy Citations Database
of Arctic bathymetry � IBCAO 2.5 km vs GEBCO � Far more complex morphology � Ridge broken into several Remain � Acoustics� Acoustics � Navigation �MIZ Leads Bathymetry � Navigation �MIZ Leads BathymetryMIZ, Leads, Bathymetry � Global Ocean Circulation MIZ, Leads, Bathymetry � Global Ocean Circulation
E-print Network
Contents: Satellite navigation etc. aboard HMS YMER in the high arctic June-September 1980; Satellite navigation aboard soviet icebreakers; The Swedish Space Corporation (SSC) and new satellite generations; Loran C; Night vision systems; Underwater techno...
... ship navigation, can be uniquely identified by co-polarized backscatter for all wind conditions below the gale ... SAR data; thus, we focus on the co-polarized backscatter signatures of different ice type...
NBII National Biological Information Infrastructure
An airborne short-pulse radar system to measure ice thickness was designed. The system supported an effort to develop an all-weather Great Lakes Ice Information System to aid in extending the winter navigation season. Experimental studies into the accurac...
The results from a test and demonstration of an ice load monitoring system are reported. The tests were done on 13-14 March 2001 on board tanker Uikku, navigating in the Bay of Bothnia through a closed cover of 20-40 cm thick ice. The system followed the ...
remote- sensing often provides the only practical means of obtaining frequently updated sea-ice ice in these remote areas. At the very least, the ever-changing sea ice can hinder navigation Earth � Spring 2008 31 Andrew Fleming is a remote sensing data manager and Dr Paul Bowyer is the remote
Given the risk that sea ice poses to marine navigation and offshore structures, government ice centres such as the Canadian Ice Service (CIS) operationally monitor sea ice conditions in support of marine activity. While traditional monitoring approaches use wide swath, single-polarization, ...
This study examines the problems caused by ice on the movement of coal on the Inland Waterways. The Inland Waterways now carry about 11% of the coal production of the United States. Significant increases in the production, use, and transportation of coal have been projected. The ability of the Inland Waterways to increase its coal handling capacity, especially during the ...
The goal of the Robotic Antarctic Meteorite Search is to enable discovery of meteorites in Antarctica by a mobile robot. The extreme environment makes it one of the best places to find meteorites, but one of the worst places for humans to work. The meteorite-finding robot will traverse an ice field in a pattern designed to cover the area completely, stopping to investigate ...
