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Articles 151 - 154 of 154

Full-Text Articles in Geophysics and Seismology

The Geology Of Maine's Coastline : A Handbook For Resource Planners, Developers, And Managers, Maine State Planning Office Jun 1983

The Geology Of Maine's Coastline : A Handbook For Resource Planners, Developers, And Managers, Maine State Planning Office

Maine Collection

The Geology of Maine's Coastline : A Handbook for Resource Planners, Developers, and Managers

Executive Department, Maine State Planning Office, Augusta, Maine, June 1983.

Contents: List of Figures / Introduction: The Geological Connection / Chapter 1: Using the Marine Environments Maps / Chapter 2: Perspectives of the Maine Coast / Chapter 3: The Building Blocks of Maine's Coast / Chapter 4: The Disappearing Shoreline / Where to Go for Help / Some Planning Considerations for Development in Coastal Geologic Environments / Land Use Laws of Special Interest to Individual Coastal Property Owners


Location Of Solution Channels And Sinkholes At Dam Sites And Backwater Areas By Seismic Methods: Part Ii, Vincent P. Drnevich, D. Raghu Aug 1972

Location Of Solution Channels And Sinkholes At Dam Sites And Backwater Areas By Seismic Methods: Part Ii, Vincent P. Drnevich, D. Raghu

KWRRI Research Reports

Four seismic field methods and a laboratory method are used to determine shear wave propagation velocities and shear moduli for two sites. The four seismic methods are: standard seismic refraction survey, down hole shooting refraction survey, transient Rayleigh wave survey, and crosshole shooting survey. A torsional resonant column apparatus was used for the laboratory tests. The cross hole shooting method gave the best results because direct measurements were made. Criteria for using this method are given. Methods which measure compression wave velocity give inconsistent results because the conversion to shear wave velocity is very sensitive to Poisson's ratio. Laboratory tests …


Location Of Solution Channels And Sinkholes At Dam Sites And Backwater Areas By Seismic Methods: Part I, Vincent P. Drnevich, S. R. Smith, E. P. Cleveland Aug 1972

Location Of Solution Channels And Sinkholes At Dam Sites And Backwater Areas By Seismic Methods: Part I, Vincent P. Drnevich, S. R. Smith, E. P. Cleveland

KWRRI Research Reports

The basic concepts associated with the sledge hammer seismic refraction survey are reviewed and a modified version called down hole shooting is discussed. The latter method has distinct advantages for rock surface profiling. These include: calibration at the end points of the survey, measurement of vertical wave propagation velocities directly, and having a refracted wave ray path for almost the entire survey length.

The down hole shooting seismic refraction survey has been simulated with the digital computer. The method can handle any shaped rock surface profile and generates corresponding travel time curves for the forward and reverse profile surveys. This …


First Annual Report On The Geology Of The State Of Maine, Lucius H. Merrill, Edward H. Perkins Jan 1930

First Annual Report On The Geology Of The State Of Maine, Lucius H. Merrill, Edward H. Perkins

Maine Collection

First Annual Report on the Geology of the State of Maine by Lucius H. Merrill, State Geologist and Edward H. Perkins, Assistant Geologist, Augusta, 1930.

Articles: Maine Granites / Report on Feldspar Quarries Visited Aug. 21-24, 1929 / Coal / Petroleum and Natural Gas in Maine / The Minerals of Maine / Minerals of Maine Index, By Mineral Names / Minerals of Maine, Index by Towns / Minerals Found at Bennett's Quarry Buckfield, Maine / List of Minerals Found at Newry, Maine / List of Minerals Found in Rumford, Maine / The Natural History of Maine Minerals (Perkins) / …