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A C language implementation of the SRO (Murdock) detector/analyzer A C language implementation of the SRO (Murdock) detector/analyzer

A signal detector and analyzer algorithm was described by Murdock and Hutt in 1983. The algorithm emulates the performance of a human interpreter of seismograms. It estimates the signal onset, the direction of onset (positive or negative), the quality of these determinations, the period and amplitude of the signal, and the background noise at the time of the signal. The algorithm has...
Authors
James N. Murdock, Scott E. Halbert

Landslide processes in saprolitic soils of a tropical rain forest, Puerto Rico Landslide processes in saprolitic soils of a tropical rain forest, Puerto Rico

Shallow soil slips, earth and debris slides appear to be a primary mechanism of hillslope denudation in the rainforest of eastern Puerto Rico. Annual rainfall in excess of 4,000 mm, and thick sequences (up to 20 m) of residual soils (saprolite) combine to produce these landslides. Shear strength testing and observatons of tension cracks indicate that landslides may start as tensile...
Authors
Matthew C. Larsen, Andrew Simon

Rainfall-soil moisture relations in landslide-prone areas of a tropical rain forest, Puerto Rico Rainfall-soil moisture relations in landslide-prone areas of a tropical rain forest, Puerto Rico

Soil moisture conditions are not well documented in steep, tropical landslide-prone terrain. In the 11,330 ha Caribbean National Forest (CNF) in northeastern Puerto Rico more than 170 landslides that occurred from one to approximately 60 years ago have been mapped. Most of these landslides are shallow, with failure depths of 0.5 ot 7 m, and are associated with periods of intense...
Authors
Matthew C. Larsen, Angel J. Torres-Sanchez

A suggested method for reporting a landslide A suggested method for reporting a landslide

The Landslide Report is a Suggested Method developed by the International Geotechnical Societies' UNESCO Working Party on World Landslide Inventory for reporting the position, date, type, geometry, volume and damage of significant landslides.
Authors
Robin Fell, W. Lacerda, D.M. Cruden, S.G. Evans, P. LaRochelle, Fernando Martinez, Lisandro Beltran, J. Jesenak, S. Novograd, E. Krauter, E. Slunga, G.A. Pilot, E.W. Brand, J. Farkas, R.K. Bhandari, V. Cotecchia, Franco Esu, H. Fujita, H. Nakamura, K. Sassa, W.H. Ting, Graham Salt, Nilmar Janbu, A.M. Nespak, Wang Gongxian, Zhang Zhuoyuan, R. Michelena, Mihai Popescu, Leif Viberg, C. Bonnard, J.N. Hutchinson, H.H. Einstein, R. L. Schuster, D. J. Varnes, Z.G. Ter-Martirosian, G.I. Ter-Stepanian, P. Anagnosti, M. Hashizume, Masayuki Watanabe

Suggested nomenclature for landslides Suggested nomenclature for landslides

The IAEG Commission on Landslides and other Mass Movements on Slopes has proposed English and French names for 19 identifiable features of slope movements and for 7 dimensions of those features. The Commission intends to publish this list in other languages and to supplement and revise it from time to time.
Authors
D.M. Cruden, S. Novograd, G.A. Pilot, E. Krauter, R.K. Bhandari, V. Cotecchia, H. Nakamura, C.O. Okagbue, Zhang Zhuoyuan, J.N. Hutchinson, D. J. Varnes, G.I. Ter-Stepanian

A numerical study of some potential sources of error in side-by-side seismometer evaluations A numerical study of some potential sources of error in side-by-side seismometer evaluations

This report presents the results of a series of computer simulations of potential errors in test data, which might be obtained when conducting side-by-side comparisons of seismometers. These results can be used as guides in estimating potential sources and magnitudes of errors one might expect when analyzing real test data. First, the derivation of a direct method for calculating the...
Authors
L. Gary Holcomb

Cincinnati landslide database Cincinnati landslide database

No abstract available.
Authors
R.L. Berknopf, R. H. Campbell, D.S. Brookshire, C.D. Shapiro

An evaluation of the accuracy of geomagnetic data obtained from an unattended, automated, quasi-absolute station An evaluation of the accuracy of geomagnetic data obtained from an unattended, automated, quasi-absolute station

A comparison is made of geomagnetic calibration data obtained from a high-sensitivity proton magnetometer enclosed within an orthogonal bias coil system, with data obtained from standard procedures at a mid-latitude U.S. Geological Survey magnetic observatory using a quartz horizontal magnetometer, a Ruska magnetometer, and a total field magnetometer. The orthogonal coil arrangement is...
Authors
D.C. Herzog
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