Download or read book Design of Ice Booms written by and published by DIANE Publishing. This book was released on with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book St Marys River Ice Booms written by Roscoe E. Perham and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance of the St Marys River Ice Booms 1976 1977 written by Roscoe E. Perham and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The End of Ice written by Dahr Jamail and published by The New Press. This book was released on 2020-03-10 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finalist for the 2020 PEN / E.O. Wilson Literary Science Writing Award Acclaimed on its hardcover publication, a global journey that reminds us "of how magical the planet we're about to lose really is" (Bill McKibben) With a new epilogue by the author After nearly a decade overseas as a war reporter, the acclaimed journalist Dahr Jamail returned to America to renew his passion for mountaineering, only to find that the slopes he had once climbed have been irrevocably changed by climate disruption. In response, Jamail embarks on a journey to the geographical front lines of this crisis—from Alaska to Australia's Great Barrier Reef, via the Amazon rainforest—in order to discover the consequences to nature and to humans of the loss of ice. In The End of Ice, we follow Jamail as he scales Denali, the highest peak in North America, dives in the warm crystal waters of the Pacific only to find ghostly coral reefs, and explores the tundra of St. Paul Island where he meets the last subsistence seal hunters of the Bering Sea and witnesses its melting glaciers. Accompanied by climate scientists and people whose families have fished, farmed, and lived in the areas he visits for centuries, Jamail begins to accept the fact that Earth, most likely, is in a hospice situation. Ironically, this allows him to renew his passion for the planet's wild places, cherishing Earth in a way he has never been able to before. Like no other book, The End of Ice offers a firsthand chronicle—including photographs throughout of Jamail on his journey across the world—of the catastrophic reality of our situation and the incalculable necessity of relishing this vulnerable, fragile planet while we still can.
Download or read book The Effectiveness and Influences of the Navigation Ice Booms on the St Marys River written by Roscoe E. Perham and published by . This book was released on 1984 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forces Generated in Ice Boom Structures written by Roscoe E. Perham and published by . This book was released on 1974 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two ice booms in the international section of the St. Lawrence Seaway, near Ogdensburg, New York, were instrumented for measuring ice forces in the winter of 1972-73. These ice booms are among several installed annually by the United States and Canada primarily to prevent ice jams from forming and severely restricting water flows. As presently used, they act as barriers to the navigation of ships. Measurements were initiated at a shore anchor site. The system used for these measurements consisted of a commercial tension cell, located in a new line spliced to the anchor rope, which provided electrical signals to a strip chart recorder that operated continuously. A second system consisted primarily of two special tension cells, an armored signal cable, a direct conversion electric generator, and a recorder. This system was used to measure two concurrent forces at a midstream location where high loads were expected. (Modified author abstract).
Download or read book Ice Booms in the Great Lakes System written by United States. Army. Corps of Engineers. Detroit District and published by . This book was released on 1982 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ice written by Mariana Gosnell and published by Knopf. This book was released on 2011-04-27 with total page 793 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like the adventurer who circled an iceberg to see it on all sides, Mariana Gosnell, former Newsweek reporter and author of Zero Three Bravo, a book about flying a small plane around the United States, explores ice in all its complexity, grandeur, and significance.More brittle than glass, at times stronger than steel, at other times flowing like molasses, ice covers 10 percent of the earth’s land and 7 percent of its oceans. In nature it is found in myriad forms, from the delicate needle ice that crunches underfoot in a winter meadow to the massive, centuries-old ice that forms the world’s glaciers. Scientists theorize that icy comets delivered to Earth the molecules needed to get life started, and ice ages have shaped much of the land as we know it.Here is the whole world of ice, from the freezing of Pleasant Lake in New Hampshire to the breakup of a Vermont river at the onset of spring, from the frozen Antarctic landscape that emperor penguins inhabit to the cold, watery route bowhead whales take between Arctic ice floes. Mariana Gosnell writes about frostbite and about the recently discovered 5,000-year-old body of a man preserved in an Alpine glacier. She discusses the work of scientists who extract cylinders of Greenland ice to study the history of the earth’s climate and try to predict its future. She examines ice in plants, icebergs, icicles, and hail; sea ice and permafrost; ice on Mars and in the rings of Saturn; and several new forms of ice developed in labs. She writes of the many uses humans make of ice, including ice-skating, ice fishing, iceboating, and ice climbing; building ice roads and seeding clouds; making ice castles, ice cubes, and iced desserts. Ice is a sparkling illumination of the natural phenomenon whose ebbs and flows over time have helped form the world we live in. It is a pleasure to read, and important to read—for its natural science and revelations about ice’s influence on our everyday lives, and for what it has to tell us about our environment today and in the future.
Download or read book St Marys River Ice Booms written by Roscoe E. Perham and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A set of two ice booms with a 250-ft (76-m)-wide navigation opening between them was designed to stabilize the ice cover in the harbor at Sault Ste. Marie, Michigan and Ontario, and to reduce the ice losses associated with winter navigation of ships on the St. Marys River. The forces from natural effects on the ice cover were predicted using existing theory and physical data for the area. The forces in the boom structure resulting from ice cover and boom interaction were estimated. When the ice booms were installed, force measurement systems were put into selected anchor cables. These systems were operated all winter in conjunction with a modest program of supplemental data gathering. The force data exhibited periods when the force distribution was in good agreement with predictions and periods when the effect of the ice on the booms differed substantially from predictions. Sometimes passing ships had a substantial effect on the ice cover and the boom loads, and at other times, the effect was negligible. The direction of travel made little difference on average peak loads. The maximum loads on the booms resulted from natural occurrences.
Download or read book St Marys River Installation and Operation of the Ice Booms at the Little Rapids Cut Negative Declaration and EA written by and published by . This book was released on 1976 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Report written by and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determining the Effectiveness of a Navigable Ice Boom written by Roscoe E. Perham and published by . This book was released on 1985 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 winters from 1975-76 through 1978-79 for the St. Marys River at Sault Ste. Marie, Michigan. The ice cover progression rate was highest in early winter. The unconsolidated ice cover in the channel was estimated to have a thickness of at least 0.91 m and a porosity of 30%. During early winter the ice discharge per vessel passage averaged approximately 5500 cu m. for the four years. Model tests for this site had indicated that without an ice control structure of any type, an ice release of 63,000 cu m per ship passage could be expected; with an ice boom the release would be 12,300 cu m per ship passage. If a 100% effective boom releases no ice at all, then the measured rate indicates that the boom is 92% effective. On-site observations and time-lapse movies provided partial verification. Ice flowed down the ship track and through the navigation opening fairly often. Occasionally ice came over the boom in response to ship movements and natural causes. Keywords: Ice booms; Ice control; Winter navigation.
Download or read book CRREL Benchnotes written by and published by . This book was released on 1976 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Great Lakes Update written by and published by . This book was released on 2002 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Great Lakes Levels written by and published by . This book was released on 1990-12-04 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CRREL Report written by and published by . This book was released on 1993 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Great Lakes St Lawrence Seaway Navigation Extension written by and published by . This book was released on 1979 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
