Quantitative Analysis of a Cyclic Peritidal Carbonate Sequence, the Middle and Upper Devonian Lost Burro Formation, Death Valley, California--A Possible Record of Milankovitch Climatic Cycles

Wan Yang , Fraka Harmsen , Michelle A. Kominz

Journal of Sedimentary Research (SEPM)

... as the peaks on Table 3. Nyquist frequency = 24. Four windows were used in the spectral computation. See text for detailed discussions. FIG. 14. Spectra...

Monitoring Hydraulic Fracturing Operations Using Fiber-Optic Distributed Acoustic Sensing

Kevin Boone, Roger Crickmore, Zabi Werdeg, Carson Laing, Mathieu Molenaar

Unconventional Resources Technology Conference (URTEC)

... would not operate properly. The maximum frequency f at which laser pulses can be transmitted is given by f=2c/nL , where c is the speed of light, n...

Abstract: Wide Azimuth Interpolation; #90211 (2015)

Daniel Trad, Jeff Deere, and Scott Cheadle

Search and Discovery.com

... assumptions can be made using a priori information. For example, since interpolation uses the very reasonable constraint that frequencies beyond Nyquist...

Computational geophysical acquisition (CGA) as an enabler of geophysical solutions

Mengli Zhang, Yaoguo Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... and receiver stations is tions, we discuss simultaneous source acquisition, which shifts derived from the Nyquist sampling theory, either explicitly...

Quality Data at a Reduced Price: Innovative Approaches in 3-D Acquisition and Processing

Mars E. Semaan, Michel F. Bee, Maryanto, Gerard Dufourd, Eddy A. Sentani

Indonesian Petroleum Association

... was lower than 200 Hz in both cases. Knowing that the Nyquist frequency for 2 ms sampling interval is 250 Hz, a sample interval of 2 ms was chosen...

Tutorial on Compressive Sampling

Search and Discovery.com

..., typically well below the number expected from the requirements of the Shannon/Nyquist sampling theorem. This technique combines two key ideas...

Geophysical Characterization of the Shallow Subsurface at a Contaminated Site in Calcasieu Parish, Louisiana

Keri B. Judice, Carl Richter, William H. Schramm, Catherine E. Bishop, Timothy W. Duex

GCAGS Transactions

..., 120 p. Doll, W. E., T. J. Gamey, J. E. Nyquist, W. Mandell, D. Groom, and S. Rohdewald, 2001, Evaluation of new geophysical tools for investigation...

Seismic Acquisition Optimization for Exploration in Thrust Belts and Foreland Basins; #42268 (2018)

Pedro Muñoz, Juan Uribe, Nestor Sanabria

Search and Discovery.com

... the impact of topography and source paramaters in record amplitudes and frequency bandwith. These differences make it difficult to make a comparison...

Lithoprobe Seismic Transect of the Alberta Basin: Compilation and Overview

Jacqueline Hope, David W. Eaton, Gerald M. Ross

CSPG Bulletin

... by multiple reverberations, we focus instead on seismic attributes (instantaneous frequency and amplitude) of the top of basement reflection in order...

Temporal Variability of Suspended Particulate Concentrations in the New York Bight

Robert A. Young, Thomas L. Clarke, Robert Mann, Donald J. P. Swift

Journal of Sedimentary Research (SEPM)

... for the 3/78 series is cut off at 0. 16 hr because of the lower value of the Nyquist frequency (1/2 t; t = interval between burst means = 3 hr...

Comparison of Bed Form Variance Spectra Within a Meander Bend During Flood and Average Discharge

Raymond A. Levey, Bjorn Kjerfve, Rufus T. Getzen

Journal of Sedimentary Research (SEPM)

...: Math Comput., v. 19, p. 297-301. DALYRYMPLE, TATE, 1960, Flood frequency analysis: U.S. Geol. Survey Water-Supply Paper 1543-A. EDGE, B. L., AND LIU...

Testing Periodicity of Depositional Cyclicity, Cisco Group (Virgilian and Wolfcampian), Texas

Wan Yang , Michelle A. Kominz

Journal of Sedimentary Research (SEPM)

... on the frequency axes are Milankovitch line spectra at 300 Ma. fn is the Nyquist frequency. See text for discussion. End_Page 1221...

Land 3D Acquisition Techniques Related to S.E. Asian Situation

Walter Ritchie

Indonesian Petroleum Association

... maximum signal frequency (i.e. half-wavelength sampling or Nyquist point) where V = seismic velocity F = max frequency θ = dip angle Method 1...

Deep-Water Depositional Facies and Reservoir Quality Evaluation Based on Fourier Analysis of Gamma-Ray Logs

Fillon, Richard H., Lawless, Paul N.

GCAGS Transactions

..." (frequency of occurrence) data for 1024 individual bed thicknesses (wavelengths). The bed thickness increments resolved in the spectra are not constant...

Cyclostratigraphic Approach to Earths History: An Introduction

Alfred G. Fischer, Bruno D'Argenio, Isabella Premoli Silva, Helmut Weissert, Vittoria Ferreri

Special Publications of SEPM

... and oceans. Orbital Signatures Milankovitch Frequency Band.— For a recent review of orbital cyclicity and its record in sediments, see Hinnov (2000...

Assessing Textural Variation in Laminated Sands Using Digital Image Analysis of Thin Sections: RESEARCH METHODS

Elmer H. van den Berg, Victor F. Bense, Wolfgang Schlager

Journal of Sedimentary Research (SEPM)

... frequencies that have wavelengths less than twice the sampling interval. This relationship is based on the Nyquist frequency (Davis 1986), which...

Warming is a Benefit to Humans and the Biosphere

John Dale Dunn

GCAGS Transactions

.... Bartzokas, A., P. Kassomenos, M. Petrakis, and C. Celessides, 2004, The effect of meteorological and pollution parameters on the frequency of hospital...

Prospectivity of volcanic basins: Trap delineation and acreage de-risking

Max Rohrman

AAPG Bulletin

... of the interpretations. Finally, care has to be taken not to use too small wavelength filters in order not to exceed the Nyquist frequency of the data set...

Vertical anomaly clusters: Evidence for vertical gas migration across multilayered sealing sequences

Martino Foschi, Joseph A. Cartwright, and Frank J. Peel

AAPG Bulletin

... the seismic data were acquired with a sampling interval of 4 ms allowing a maximum theoretical frequency of 125 Hz (Nyquist frequency). The CDP trace...

Sensitivities, Limitations, and Error Inherent in Resistivity-tool-response Modeling - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2

Hezhu Yin

AAPG Special Volumes

... discrete data if there are two or more samples per cycle for the highest frequency (the Nyquist frequency) present. This remarkable theorem, when applied...

Seismic Stratigraphic Analysis of the Barnett Shale and Ellenburger Unconformity Southwest of the Core Area of the Newark East Field, Fort Worth Basin, Texas

Elizabeth T. Baruch, Roger M. Slatt, Kurt J. Marfurt

AAPG Special Volumes

... recorded with a sampling interval of 2 ms at 2001 samples per trace, resulting in a Nyquist frequency of 250 Hz. The usable bandwidth ranges from 20...

Cyclostratigraphy and Chronology of the Albian Stage (Piobbico Core, Italy)

Alessandro Grippo, Alfred G. Fischer, Linda A. Hinnov, Timothy D. Herbert, Isabella Premoli Silva

Special Publications of SEPM

.... Power Spectra In order to obtain a more objective view of the cyclicities we turn to the frequency domain of power spectra. We employed tapered Thomson...

Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5

John H. Doveton

AAPG Special Volumes

... corresponds to the Nyquist frequency. This is a limit beyond which higher frequency wavelets cannot be estimated and is set by the data spacing...

High-Frequency Cyclicity in the Mediterranean Messinian Evaporites: Evidence for Solar–Lunar Climate Forcing

Vinicio Manzi, Rocco Gennari, Stefano Lugli, Marco Roveri, Nicola Scafetta, B. Charlotte Schreiber

Journal of Sedimentary Research (SEPM)

... to the Nyquist frequency for annually resolved records, and that the spectral uncertainty increases with the period, as expected. The record of thickness variation...

Abstract: ERT and Seismic Tomography in Identifying Subsurface Cavities; #90172 (2014)

Grey I. Riddle, Craig J. Riddle, Douglas R. Schmitt

Search and Discovery.com

... that are able to detect a tunnel, seismic method and electrical tomography. Previous studies have shown that seismic methods (Halihan and Nyquist, 2006...