Search Details

Word: sediment (lookup in dictionary) (lookup stats)
Dates: during 2000-2009
Sort By: most recent first (reverse)


Usage:

...impacts of such development will be immense, ranging from the destruction of wildlife habitat to the loss of sediment transfer - the natural movement of soil downstream to create alluvial floodplains that farmers have relied upon for centuries. Thousands of villagers would have to be relocated to make room for dams and reservoirs, and many would still not benefit directly from new power production because most of the electricity would be used in cities, not in rural areas. Environmentalists are also skeptical that the ambitious integrated scheme would ever work. "It's pie-in-the-sky stuff," says Lori Pottinger, director...

Author: /time Magazine | Title: The Waters Of Life | 4/23/2006 | See Source »

...this area get slammed so hard? At least part of the answer lies in the loosely consolidated sediment that sits below the surface. Seismic waves pass quickly through bedrock, but they become trapped in sediment-filled basins. "It's sort of like being in a bathtub filled with water," says USGS seismologist Thomas Brocher. "When you start splashing, the waves keep bouncing up and down and from side to side." The basin effect amplifies not only the intensity of the shaking but also its duration, which is no doubt why buildings collapsed in Santa Rosa in 1906, killing some...

Author: /time Magazine | Title: Lessons from the San Francisco Earthquake | 4/2/2006 | See Source »

...nearest dune. "Almost as good as a footprint in wet sand," Webb says. Since the 2003 find, which was announced last December, his team has uncovered around 460 human prints crisscrossing the site like the traces of a peak-hour crowd, many deeply impressed in the sediment, clearly showing where mud once squished between toes. From their size and the distance between them, Webb and his team have formed a rough picture of 23 individuals who traversed what would have been a wet landscape between 19,000 and 23,000 years ago. A child wanders alone, a little...

Author: /time Magazine | Title: Secrets of the Dunes | 3/19/2006 | See Source »

...Today the landscape they knew looks empty but for lonely turrets of sediment eaten away by the weather and dunes shimmering under a scalding sky. Parched flocks of galahs drift on the hot wind. Yet the Willandra Lakes region, which in 1981 became a 240,000-hectare World Heritage Area, has in the past 30 years yielded astounding archaeological treasures. In 1968 the dunes surrendered Mungo Lady, the skeletal remains of a young woman whose burial site remains the oldest evidence of cremation ever found. The ocher-covered bones of the world's oldest known ritual burial, Mungo Man, were...

Author: /time Magazine | Title: Secrets of the Dunes | 3/19/2006 | See Source »

...series of ponds, extends far beneath it. "They were in a hurry," he says of the hunters, "and I'd love to catch up with them." He believes the tracks were probably made within a matter of months and preserved when protective layers of silty clay covered the muddy sediment. And it's likely that more tracks remain on several underlying layers. "It's like a layer of pancakes," he says, "and we can only see the jam on the top." Other unusual marks could be from implements; Aboriginal trackers from northern Australia are being called in to see what...

Author: /time Magazine | Title: Secrets of the Dunes | 3/19/2006 | See Source »

Previous | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | Next