Insights into sediment flow processes can help to better understand the feasibility of turbidite as an earthquake indicator in a specific subaqueous environment

We investigated homogeneous muds, turbidites, and debris that were preserved in a 457-m deep ICDP drilling (220-0 ka) from the Dead Sea depocenter. Based on previous flash flood measuring, surface plume monitoring, and sediment traps monitoring in the lake center, we link homogeneous muds in the deep core to overflows, and link turbidites and debris … Read more

Recent drop in Lake Powell’s storage shows how much space sediment is taking up

The Bureau of Reclamation last week revised its data on the amount of water stored in Lake Powell, with a new, lower tally taking into account a 4% drop in the reservoir’s total available capacity between 1986 and 2018 due to sedimentation. Bureau data on the reservoir’s water-storage volume showed a loss of 443,000 acre-feet … Read more

Researchers Think They’ve Figured Out What Causes an Odd Behavior of Rivers

Throughout history, important cities around the world have flourished along river banks. But rivers can also be destructive forces. They routinely flood, and on rare occasions, they can abruptly shift pathways. These “channel-jumping” events, which are called avulsions, have caused some of the deadliest floods in human history. Avulsions on China’s Yellow River killed over … Read more

Caldera chronicle: A geological excursion between Tower and Canyon junctions in Yellowstone National Park |

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week’s contribution is from Michael Poland, geophysicist with the US Geological Survey and Scientist-in-Charge of the Yellowstone Volcano Observatory. The road over Dunraven Pass between Tower and Canyon Junctions, in the northeast part of Yellowstone National Park, … Read more

Caldera chronicle: A geological excursion between Tower and Canyon junctions in Yellowstone National Park | Regional News

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week’s contribution is from Michael Poland, geophysicist with the US Geological Survey and Scientist-in-Charge of the Yellowstone Volcano Observatory. The road over Dunraven Pass between Tower and Canyon Junctions, in the northeast part of Yellowstone National Park, … Read more

Sediment is pushing into Lake Powell as the reservoir reaches record-low levels

Lake Powell • As the Colorado River approaches the still waters of Lake Powell, the pace of the current quickens. Chains of standing waves form out of nowhere, grow in size until they are capped with white foam, and then disappear a few minutes later. Giant hunks of mud calve from the banks to form … Read more

Sea Levels Are Creeping Up, But Some Beaches Are Getting Bigger. Here’s Why

In a warmer world, rising sea levels could render many coastlines, beaches, and reef islands uninhabitable, or destroy them altogether. The 1.09 ℃ Earth has warmed since pre-industrial times has already heightened seas by 20 centimeters. But curiously, research shows some coastlines and even low-lying coral reef islands are actually growing rather than eroding in … Read more

Undersea sediment reveals clues about seismic activity

Earthquakes are famously impossible to predict, and have been the cause of some of the most devastating events in human history. But could we learn more about these natural disasters by tracking them backwards through time? One research mission, dubbed Expedition 386wants to use sediment records in the Pacific Ocean off the coast of Japan … Read more

Shrinking Lake Powell holds even less water than previously thought, study says

Sediments washing into Utah’s largest reservoir reduce its capacity by 33,270 acre-feet each year. (Francisco Kjolseth | The Salt Lake Tribune) Cari Johnson, a geology professor at the University of Utah and Jack Schmidt, a professor at Utah State University’s Center for Colorado River Studies analyze the so-called Dominy Formation in Waterhole Canyon, one of … Read more

A preliminary study on the inorganic carbon sink function of mineral weathering during sediment transport in the Yangtze River mainstream

CaO, MgO, calcite and dolomite contents of suspended sediments in the Yangtze River and its main tributaries Figure 2 shows a declining tendency of the CaO + MgO and calcite + dolomite of suspended sediments in the mainstream of the Yangtze River from upstream to downstream. The total CaO + MgO contents along the Yangtze … Read more