Book Chapters
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6063
Glaciers: scribes of climate, harbingers of change
No abstract available.
Authors
Dorothy K. Hall, Richard S. Williams
Submarine slope failures near Seward, Alaska, during the M9.2 1964 earthquake
Following the 1964 M9.2 megathrust earthquake in southern Alaska, Seward was the only town hit by tsunamis generated from both submarine landslides and tectonic sources. Within 45 seconds of the start of the earthquake, a 1.2-km-long section of waterfront began sliding seaward, and soon after, ~6-8-m high waves inundated the town. Studies soon after the earthquake concluded that submarine landslid
Authors
Peter J. Haeussler, H. J. Lee, H. F. Ryan, Keith A. Labay, R. E. Kayen, M. A. Hampton, E. Suleimani
Mechanisms for an ∼7‐kyr climate and sea‐level oscillation during marine isotope stage 3
No abstract available.
Authors
Peter U. Clark, Steven W. Hostetler, N. G. Pisias, Andreas Schmittner, K. J. Meissner
Reassessment of seismically induced, tsunamigenic submarine slope failures in Port Valdez, Alaska, USA
The M9.2 Alaska earthquake of 1964 caused major damage to the port facilities and town of Valdez, most of it the result of submarine landslide and the consequent tsunamis. Recent bathymetric multibeam surveys, high-resolution subbottom profiles, and dated sediment cores in Port Valdez supply new information about the morphology and character of the landslide deposits. A comparison of pre- and post
Authors
H. J. Lee, H. F. Ryan, Peter J. Haeussler, R. E. Kayen, M. A. Hampton, Jacques Locat, E. Suleimani, C. R. Alexander
Public geoscience at the frontiers of democracy
No abstract available.
Authors
Deborah R. Hutchinson, Richard S. Williams
Sediment and sediment-associated contaminant transport through karst
The unusual characteristics of subterranean flow in karst aquifers allow for the transport of sediment. Kartst ground-water system are created by dissolution of the bedrock matrix coupled with structural and stratigraphic controls. As a result, high flow velocities, large-diameter openings, and turbulent flow, all necessary for the entrainment and transport of particles, are present—at least episo
Authors
Barbara Mahler, J.-C. Personne, F. Leo Lynch, Peter C. Van Metre
Statistical methods for paleovector analysis
Our concern is with the statistical description of paleomagnetic vectors and the estimation of their mean and variance. These vectors may come from a number of different rock units or archeological samples, representing a range of acquisition times, and be useful for studies of the mean paleomagnetic field and paleosecular variation; alternatively, the vectors may come from individual measurements
Authors
Jeffrey J. Love
Principal component analysis in paleomagnetism
When studying the mean and variance of paleomagnetic data it is a common practice to employ principal component analysis (Jolliffe, 2002). The theory of this method is related to the mathematics quantifying the moment of inertia of a set of particles of mass about some reference point of interest. For the purposes of data analysis, principal component analysis was first promoted by Pearson (1901)
Authors
Jeffrey J. Love
Observatories, program in USA
The Geomagnetism Program of the US Geological Survey has, for over a century now, monitored the Earth's magnetic field through a network of magnetic observatories and conducted scientific analysis on the data collected. The program traces its origins to the Reorganization Act of 1843, in which Congress authorized the creation of a coastal survey agency, as part of the Treasury Department, that was
Authors
Jeffrey J. Love, J.B. Townshend
Magnetic indices
Magnetic indices are simple measures of magnetic activity that occurs, typically, over periods of time of less than a few hours and which is recorded by magnetometers at ground‐based observatories (Mayaud, 1980; Rangarajan, 1989; McPherron, 1995). The variations that indices measure have their origin in the Earth's ionosphere and magnetosphere. Some indices having been designed specifically to qua
Authors
Jeffrey J. Love, K.J. Remick