Publications
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The 1995 revision of the joint US/UK geomagnetic field models - I. Secular variation The 1995 revision of the joint US/UK geomagnetic field models - I. Secular variation
We present the methods used to derive mathematical models of global secular variation of the main geomagnetic field for the period 1985 to 2000. These secular-variation models are used in the construction of the candidate US/UK models for the Definitive Geomagnetic Reference Field at 1990, the International Geomagnetic Reference Field for 1995 to 2000, and the World Magnetic Model for...
Authors
S. Macmillan, D.R. Barraclough, J.M. Quinn, R.J. Coleman
Predicting landslide vegetation in patches on landscape gradients in Puerto Rico Predicting landslide vegetation in patches on landscape gradients in Puerto Rico
We explored the predictive value of common landscape characteristics for landslide vegetative stages in the Luquillo Experimental Forest of Puerto Rico using four different analyses. Maximum likelihood logistic regression showed that aspect, age, and substrate type could be used to predict vegetative structural stage. In addition it showed that the structural complexity of the vegetation...
Authors
R.W. Myster, J.R. Thomlinson, M. C. Larsen
Regional landslide-hazard evaluation using landslide slopes, Western Wasatch County, Utah Regional landslide-hazard evaluation using landslide slopes, Western Wasatch County, Utah
Landsliding has historically been one of the most damaging geologic hazards in western Wasatch County, Utah. Accordingly, we mapped and analyzed landslides (slumps and debris slides) in the area to provide an empirical basis for regional landslide-hazard evaluation. The 336 landslides in the 250-sq-mi (650-km2) area involve 20 geologic units, including Mississippian- to Quaternary-aged...
Authors
M.D. Hylland, Mark Lowe
The 1995 revision of the joint US/UK geomagnetic field models. II: Main field The 1995 revision of the joint US/UK geomagnetic field models. II: Main field
This paper presents the 1995 main-field revision of the World Magnetic Model (WMM-95). It is based on Project MAGNET high-level (??? 15,000 ft.) vector aeromagnetic survey data collected between 1988 and 1994 and on scalar total intensity data collected by the Polar Orbiting Geomagnetic Survey (POGS) satellite during the period 1991 through 1993. The spherical harmonic model produced...
Authors
J.M. Quinn, R.J. Coleman, S. Macmillan, D.R. Barraclough
Introduction to special section: The Trans-Alaska Crustal Transect (TACT) across Arctic Alaska Introduction to special section: The Trans-Alaska Crustal Transect (TACT) across Arctic Alaska
This special section of the Journal of Geophysical Research addresses the composition and structural evolution of the lithosphere in northern Alaska. Investigations reported in this section were mainly undertaken as part of the Trans‐Alaska Crustal Transect (TACT), an integrated geological and geophysical transect of the entire Alaskan lithosphere along a north‐south corridor undertaken...
Authors
George Plafker, Walter D. Mooney
Evolution and history of incised valleys: The Mobile Bay model Evolution and history of incised valleys: The Mobile Bay model
No abstract available.
Authors
Jack Kindinger
Coastal erosion of southern Lake Michigan Coastal erosion of southern Lake Michigan
No abstract available.
Authors
David W. Folger, Steve Colman, Peter W. Barnes
Seafloor studies of Mamala Bay, Honolulu, Hawaii Seafloor studies of Mamala Bay, Honolulu, Hawaii
No comprehensive study of the effects of disposal of dredge spoils has been conducted to determine if the environment has suffered. The U.S. Army Corps of Engineers (USACE) has regularly dredged the shipping channels of Honolulu Harbor and Pearl Harbor for commercial and military purposes. The 5-year frequency for new dredging activity has led to the formation of extensive offshore wide...
Authors
Michael E. Torresan
History of the International Conference and Field Trip on Landslides (ICFL) History of the International Conference and Field Trip on Landslides (ICFL)
No abstract available.
Authors
E. E. Brabb
No: The L.A. array is not ready for prime time No: The L.A. array is not ready for prime time
Although much interest will focus upon the temporal behavior of observed deformation, the principal justification for the SCIGN array is that within a 5‐year interval it will provide an accurate and detailed determination of the velocity field in the Los Angeles basin that can be used to identify the active faults and estimate their secular slip rates. Obviously, the accuracy of the...
Authors
James C. Savage