Replies

Space Age Lasers Reveal Offa's Dyke Missing Link

06/01/2007 5:36:07 PM PDT · by blam · 45 replies · 1,519+ views
Western Daily Press ^ | 6-1-2007 | Janet Hughes

SPACE AGE LASERS REVEAL OFFA'S DYKE MISSING LINK BY JANET HUGHES J.HUGHES@BEPP.CO.UK 08:00 - 01 June 2007 It has remained hidden for centuries but space-age technology has stripped away layers of history to discover what excited archaeologists believe could be a missing section of Offa's Dyke. Aerial laser technology, which allows the experts to see what is hidden below the trees and the undergrowth, has discovered a long strip of earthworks in the Forest of Dean. And archaeologists believe they may have finally found a missing 250-metre stretch of the Dyke built by King Offa between 757 to 796 AD...
Lava Left It's Mark On Grand Canyon

02/18/2008 4:08:37 PM PST · by blam · 61 replies · 118+ views
ABC - Discovery News ^ | 2-15-2008 | Larry O'Hanlon

Lava left its mark on Grand Canyon Friday, 15 February 2008 Larry O'Hanlon Discovery News Volcanic lava flows onced dammed the river that ran through the Grand Canyon (Source: iStockphoto) The Grand Canyon was not just carved by water. It has also been the scene of periodic wars between the Colorado River and volcanic eruptions that dammed the river, then burst. New airborne elevation survey data and radioisotope dating of Grand Canyon lava flows sheds new light on the battle between water and molten rocks there over the past 725,000 years. Over that time there have been no fewer than...
Satellites Spot Lost Guatamala Mayan Temples

02/20/2008 7:28:52 PM PST · by blam · 24 replies · 534+ views
Reuters ^ | 2-20-2008 | Mica Rosenberg - Catherine Bremer - David Wiessler

Satellites spot lost Guatemala Mayan temples Wed Feb 20, 2008 1:29pm EST GUATEMALA CITY (Reuters) - Ancient Mayan astronomers aligned their soaring temples with the stars and now modern archeologists have found the ruins of hidden cities in the Guatemalan jungle by peering down from space. Archeologists and NASA scientists began teaming up five years ago to search for clues about the mysterious collapse of the Mayan civilization that flourished in Central America and southern Mexico for 1,000 years. The work is paying off, says archeologist William Saturno, who recently discovered five sprawling sites with hundreds of buildings using a...
On Shaky Ground: Geological Faults Threaten Houston

04/28/2008 7:31:45 PM PDT · by blam · 19 replies · 85+ views
Science Daily ^ | 4-28-2008 | University of Houston

On Shaky Ground: Geological Faults Threaten HoustonPictured is a Houston-area map showing the locations of salt domes and known active surface faults interpreted on lidar imagery. (Credit: Shuhab Khan and Richard Engelkemeir)ScienceDaily (Apr. 29, 2008) -- After finding more than 300 surface faults in Harris County, a University of Houston geologist now has information that could be vitally useful to the region's builders and city planners. This information -- the most accurate and comprehensive of its kind -- was discovered by Shuhab Khan, assistant professor of geology, and Richard Engelkemeir, a geology Ph.D. student, using advanced radar-like laser technology. Although...
Greek Style Architecture Found In The Ancient Achaemenid City

06/25/2008 5:43:33 PM PDT · by blam · 8 replies · 157+ views
Cultural Heritage News ^ | 6-25-2008

Greek Style Architecture Found in the Ancient Achaemenid City Achaemenid city of Istakhr in Fars Province Tehran , 25 June 2008: Archaeologists have used geological surveys in the south of Iran to reveal rectangular formations inspired by Greek architecture dating to the Sassanid era. Archeologists have said that the structures located in Fars Province are part of the urban planning of the ancient Achaemenid city of Istakhr during the Sassanid period (226-651 CE). The design is loaned from Hippodamus style of urban planning during a series of armed conflicts with Persias great rival to the west, the Roman Empire, said...
Lasers Uncover Craters

12/03/2008 8:30:16 PM PST · by neverdem · 14 replies · 934+ views
ScienceNOW Daily News ^ | 1 December 2008 | Phil Berardelli

Enlarge ImageUnmasked. Aircraft LIDAR sweeps found this previously hidden impact crater in central Alberta, Canada. Credit: Herd et al., Geology Researchers have uncovered a pond-sized crater in the woods of central Alberta, Canada, carved out by a meteor that slammed into Earth about 1100 years ago. The technique they used to pinpoint the pit--a laser take on radar--figures to help scientists find evidence of hundreds of similar impacts that have remained hidden until now. Every 10 years or so, a sizable chunk of asteroid or comet crashes to Earth, leaving a crater about 40 meters wide. The remnants of...
Laser mapping may help solve the mystery of the Mima Mounds

04/06/2009 10:06:39 AM PDT · by BGHater · 16 replies · 971+ views
Seattle Times ^ | 03 Apr 2009 | Sandi Doughton

Mima Mounds: Scientists say new laser maps suggest glaciers as the architects of the mysterious humps, but one gopher proponent holds firm. From goofy to erudite, more than three dozen theories have attempted to explain the origins of grassy mounds that dot the prairies of Southwest Washington. The latest twist won't settle the debate, but it casts the mysterious hummocks in a different light. Laser light, that is. Scientists used airborne laser surveys to create topographic maps that reveal new details about the so-called Mima Mounds scattered across lowlands south of Olympia and Tacoma. The technique fires 23,000 pulses a...
Italian archaeologists find lost Roman city of Altinum near Venice

07/30/2009 8:37:00 PM PDT · by bruinbirdman · 30 replies · 1,659+ views
The Times ^ | 7/31/2009 | Hannah Devlin

The bustling harbour of Altinum near Venice was one of the richest cities of the Roman empire. But terrified by the impending invasion of the fearsome Germanic Emperor Attila the Hun, its inhabitants cut their losses and fled in AD452, leaving behind a ghost town of theatres, temples and basilicas. Altinum was never reoccupied and gradually sunk into the ground. The city lived on in Venetian folk tales and historical artefacts but its exact position, size and wealth gradually faded into obscurity. Now, using aerial photography of the region, Italian archaeologists have not only located the city, but have produced...
Vulcano ash: First official report by DLR (german counterpart of NASA) released.

04/20/2010 2:07:26 PM PDT · by buzzer · 8 replies · 543+ views
DLR ^ | today | U. Schumann, H. Schlager, B. Weinzierl, O. Reitebuch, A. Minikin, H. Huntrieser, T. Sailer, H. Manns

A successful Falcon measurement flight was performed on 19 April 2010 for probing plumes over Germany from the Iceland Eyjafjallajökull volcano eruption. Layers of volcanic ash were detected by Lidar and probed in-situ with aerosol instruments. Under suitable viewing conditions, the ash layer was visible as a brownish layer to the observer. The horizontal and vertical distributions of the volcano layers were variable. In the plume layers particles larger than 3µm were detected at concentrations, not present in the free troposphere during unpolluted conditions. The concentrations of large particles measured in the volcano layers are comparable to concentrations measured typically...