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Dewey Library - HG5706.4.A3 G73 2019

Dewey Library - HG540.B47 2019

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Dewey Library - HG4026.M6647 2018

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Dewey Library - HJ6767.G35 2018

Dewey Library - HG4551.F69 2019

Dewey Library - HG9396.R63 2019

Dewey Library - HG181.G357 2019

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Dewey Library - HG4521.W38765 2018

Dewey Library - HJ9801.P73 2018

Dewey Library - HG5160.5.A3 C45 2019

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Oxford : Oxford University Press, 2010.

Thomas Jefferson reads the words that started it all: The Declaration of Independence.

Patrick Henry demands liberty or death in his rousing 1775 speech. Hear the immortal words voiced by interpreter Richard Schumann.

Wry humor softens the sharp wit of this quintessentially American founding father. Interpreter John Hamant talks about portraying Benjamin Franklin.

Historic sites can speak volumes if you know what to listen for. Professor Jim Whittenburg on how to get the most out of site visits.

Film and television actress Erica Hubbard appears at Colonial Williamsburg in a live performance March 9 as part of Steadfast Spirits Weekend. Hear how she prepares to take on a period role, and the inspiration she finds in Lydia Broadnax’s story.

Southerners adapt to summer temperatures in every century. Curator Linda Baumgarten tells us how to dress for the heat in colonial style on this week’s podcast.

An onsite game embroils players in a Revolutionary spy’s world of danger, loyalty, codes and plots. “The Black Chambers” is game three in “RevQuest: Save the Revolution” series.

Former head of the CIA and Secretary of Defense in Republican and Democratic administrations, Robert Gates is a man who knows something about politics, pragmatism, and compromise. He sits down with us this week to talk about the portability of American values, the constants of conflict, and the nation’s unique fortune in the caliber of […]

A quiet, restrained genius is animated on the streets of the Revolutionary City by Actor-Interpreter Bryan Austin. Hear his approach to filling the shoes of the fourth president.

Presidential Historian Michael Beschloss visits Colonial Williamsburg and shares his views on the changes technology brings to politics and the presidency, and ruminates on the importance of place.

Retired US Marine Corps General Anthony Zinni has some sharp insights and powerful ideas to share in his new book, “Before the First Shots are Fired: How America Can Win or Lose off the Battlefield.” Listen this week as he previews some of the philosophies he shares in his fourth book.

Relax with a brew from the past, courtesy of Master of Historic Foodways Frank Clark. Twenty years of study and practice have resurrected the 18th century’s favorite beer: Old Stitch.

Colonial Williamsburg is embarking on its first-ever Halloween experience. The infamous pirate, Blackbeard, has returned to seek revenge after members of his crew were tried and executed in Williamsburg.

The 7G Firewall was released about a year ago as beta, and has had time now to mature/develop into a stable release. So this is just a heads up that 7G is now officially out of beta and ready for use in live/production environments. Thank you to everyone who helped with development by providing bug reports and feedback for 7G, very much appreciated. Learn more and download 7G Firewall » Want to help test 8G Firewall? Check out the 8G […]

Autor: Verflassen, Johann Jakob Christian
Erschienen [Nicht nach 1792]
BSB-Signatur Slg.Stopp D 254 a

URN: urn:nbn:de:bvb:12-bsb00132386-3
URL: http://daten.digitale-sammlungen.de/~db/0013/bsb00132386/images/

Is there a single surge mechanism? Contrasts in dynamics between glacier surges in Svalbard and other regions Murray, Tavi; Strozzi, Tazio; Luckman, Adrian; Jiskoot, Hester; Christakos, Panos During the 1990s, Monacobreen, a 40-km-long tidewater glacier in Svalbard, underwent a major surge. We mapped the surge dynamics using ERS synthetic aperture radar images, differential dual-azimuth interferometry and intensity correlation tracking. A series of 11 three-dimensional (3-D) velocity maps covering the period 1991–1997 show a months-long initiation and years-long termination to the surge, with no indication of a surge front travelling downglacier. During the surge, the front of the glacier advanced 2 km, the velocity and derived strain rate increased by more than an order of magnitude, and maximum ice flow rates measured during 1994 were 5md 1. The spatial pattern of both velocity and strain rate was remarkably consistent and must therefore be controlled by spatially fixed processes operating at the glacier bed. We combine these results with those published in the literature to construct a typical Svalbard glacier surge cycle and compare this to surge dynamics of glaciers from other cluster regions, especially those of Variegated Glacier in Alaska. The strong contrast in dynamics suggests that there exist at least two distinct surge mechanisms. Sherpa Romeo green journal. Permission to archive final published version.

Glacier surge propagation by thermal evolution at the bed Murray, Tavi; Stuart, Graham W.; Miller, Paul J.; Woodward, John; Smith, Andrew M.; Porter, Philip R.; Jiskoot, Hester Bakaninbreen, southern Svalbard, began a prolonged surge during 1985. In 1986, an internal reflecting horizon on radio echo sounding data was interpreted to show that the position of the surge front coincided with a transition between areas of warm (unfrozen) and cold (frozen) bed. Ground-penetrating radar lines run in 1996 and 1998 during early quiescence show that the basal region of the glacier is characterized by a strong reflection, interpreted as the top of a thick layer of sediment-rich basal ice. Down glacier of the present surge front, features imaged beneath the basal reflection are interpreted as the bottom of the basal ice layer, the base of a permafrost layer, and local ice lenses. This indicates that this region of the bed is cold. Up glacier of the surge front, a scattering zone above the basal reflection is interpreted as warm ice. There is no evidence for this warm zone down glacier of the surge front, nor do we see basal permafrost up glacier of it. Thus, as in early surge phase, the location of the surge front is now at the transition between warm and cold ice at the glacier bed. We suggest that the propagation of the front is associated with this basal thermal transition throughout the surge. Because propagation of the front occurs rapidly and generates only limited heat, basal motion during fast flow must have been restricted to a thin layer at the bed and occurred by sliding or deformation localized at the ice-bed interface. Sherpa Romeo green journal. Permission to archive final published version.

Location Circulation Collection

Call No. QA76.73.V56 K54 2015

Repo rate now stands at 5.15%, lowest in nine years. A sixth cut this year would mark the longest streak of consecutive rate cuts since the current interest rate framework was introduced 20 years ago