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Disruption of the Mauna Loa magma system by the 1868 Hawaiian earthquake: Geochemical evidence. Disruption of the Mauna Loa magma system by the 1868 Hawaiian earthquake: Geochemical evidence.

To test whether a catastrophic earthquake could affect an active magma system, mean abundances (adjusted for "olivine control") of titanium, potassium, phosphorus, strontium, zirconium, and niobium of historic lavas erupted from Mauna Loa Volcano, Hawaii, after 1868 were analyzed and were found to decrease sharply relative to lavas erupted before 1868. This abrupt change in lava...
Authors
Robert I. Tilling, J. Michael Rhodes, J. W. Sparks, John P. Lockwood, P. W. Lipman

The physics of debris flows — A conceptual assessment The physics of debris flows — A conceptual assessment

Debris flows exhibit conspicuous dynamic interactions among their solid and fluid constituents. Key features of the interactions are neglected in traditional theories that treat debris flows as viscoplastic continua or as uniformly dispersed grain flows, but improved understanding of grain-grain and fluid-grain interactions has emerged from recent experimental and theoretical research...
Authors
Richard M. Iverson, Roger P. Denlinger

Hydraulics and basin morphometry of the largest flash floods in the conterminous United States Hydraulics and basin morphometry of the largest flash floods in the conterminous United States

The maximum rainfall-runoff floods measured by indirect methods in small basins (0.39-370 km2) in the conterminous United States are examined. This analysis identified twelve floods that were the largest ever measured. These floods all occurred in semiarid to arid areas. For eleven of the twelve largest rainfall-runoff floods measured in small basins by the slope-area method, values of...
Authors
J. E. Costa

Reconnaissance investigation of sediment distribution, erosion, and transport in the upper Deschutes River, Deschutes County, Oregon, November 1986 Reconnaissance investigation of sediment distribution, erosion, and transport in the upper Deschutes River, Deschutes County, Oregon, November 1986

A preliminary investigation of sediment distribution, erosion, and transport in the upper Deschutes River was conducted in response to the perceived problem that brown trout spawning gravels were being rendered unusable due to an accumulation of fine-grained sediment. Contrary to the contention that channel gravels are being covered by fine-grained sediment, examination of the river...
Authors
K. A. Cameron, J. J. Major

A comparison of the largest rainfall-runoff floods in the United States with those of the People's Republic of China and the world A comparison of the largest rainfall-runoff floods in the United States with those of the People's Republic of China and the world

The maximum historic rainfall-runoff floods measured in the United States, the People's Republic of China and the world all plot close to a smooth curve of drainage area versus discharge. In the United States, the possibility that flood peaks were overestimated and the closeness of these peaks to the probable maximum floods suggest that this limiting curve of maximum floods will not...
Authors
J. E. Costa
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