...M. Scott Baker; Robert B. Hawman Abstract Data for two broadband stations and three-component recordings of wide-angle reflections are used to constrain the velocity structure and depth to Moho beneath a portion of the southern Appalachians. Broadband data from the U.S. National Seismic Network...

... using broadband seismic waveform data from only openly available sources through International Federation of Digital Seismograph Networks (FDSN) webservices. Several permanent seismic networks operate stations in the region; however, those with global coverage and openly available data are sparse (e.g...

... interpretations also are available. Collocated broadband seismic data, CSEM, and MT data also are made available for this study (Figure  1b ). The seismic data set consists of seismic velocity, full stack, and angle stacks. The broadband 3D seismic data are acquired using dual-sensor streamer ( Widmaier et al...

... ). It is, therefore, very welcome that steps have been taken to develop a permanent seismic network AfricaArray that, complemented with a growing number of campaign broadband seismic observations (Fig.  1 , see Data and Resources ), provides the database we discuss here for another continent, Africa. In addition...

.... This dual-coil survey can provide maximum source-receiver offsets of as much as 14 km with full-azimuth distribution. In addition to dual-coil acquisition geometry, receiver cables were slanted with variable depths to a maximum of 40 m to achieve broadband data collection ( Figure 1 ). A bigger air-gun...

... be seen on synthetic examples to be equal to a reference computed by migrating the data modeled without any reflecting water surface. A real data set was used to illustrate this method, and another one was used to check the possibility of performing prestack elastic inversion on the deghosted gathers...

... and synthetics for the best-fitting broadband inversion where no rupture directivity was allowed. Symbols are the same as in Figure 2 . The fit to the data is noticeably poorer than Figure 2 for many stations, especially the later portions of the waveforms. In summary, broadband modeling of body waves...

...Matthias Brühl; Gijs J. O. Vermeer; Michael Kiehn; Ralph W. Knapp Abstract I am very pleased to see the elaboration of my paper “Fresnel zones in the light of broadband data” (Knapp, 1990) done by Brühl et al. (1996). Society of Exploration Geophysicists 1997 ...

... in Figure 2 (see also Sheriff, 1991). GeoRef, Copyright 2005, American Geological Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States 1996 ...

... reflection. The extent of this effect is dependent upon vertical resolution and the time separation of the primary reflector and the diffraction. Interference occurs for reflectors smaller in diameter than the first Fresnel zone. Migration removes this interference.For broadband data the Fresnel zone...

...Ekaterina Kneller; Manuel Peiro Abstract Towed-streamer marine broadband data have been key contributors to recent petroleum exploration history, in new frontiers and in mature basins around the world. They have improved the characterization of reservoirs by reducing the uncertainty in structural...

...Mehdi Aharchaou; Erik Neumann ABSTRACT Broadband preprocessing has become widely used for marine towed-streamer seismic data. In the standard workflow, far-field source designature, receiver and source-side deghosting, and redatuming to mean sea level are applied in sequence, with amplitude...

...‐Jacques Lévêque; Michel Cara; Frédérick Pesqueira Abstract The GEOSCOPE observatory ( Institut de physique du globe de Paris [IPGP] and École et Observatoire des Sciences de la Terre de Strasbourg, 1982 ) provides more than four decades of high‐quality continuous broadband data to the scientific community...

... instruments, we detail two different time‐domain filters that would allow users to convert broadband STS‐2 data into very broadband data with a response similar to that of an STS‐1 (flat to velocity to 360 s period). We conclude that the complexity of the current primary horizontal vault sensors in the GSN...

... data. The broadband waveforms are inverted in a frequency range suitable for surface waves, whereas for the short‐period data a frequency range suitable for body waves is applied. The second modification is the use of first‐motion body‐wave polarities to select the most probable solution out of all...

... arguments underlining why adding low frequencies may be beneficial and provided experimental evidence for the improvements by several case studies with recently acquired broadband data. We discussed where research and development efforts in the industry with respect to low frequencies should be focusing...

...Simon Cordery Abstract Examples of raw and processed broadband single-sensor single-source land seismic data acquired in the Middle East region have been found to be significantly noisy, and very low-frequency signal has been either missing or unrecoverable. In response, an effective and pragmatic...

... events Receiver function Crust and upper mantle Moho discontinuity A CMG 40T seismograph connected to a DM24 data acquisition system is functioning at the Indian School of Mines (ISM) observatory, Dhanbad (23.875° N, 86.444° E) since January 2007. This broadband (BB) observatory was initially...

...,June 1981 THE RUPTURE CHARACTERISTICS OF TWO DEEP EARTHQUAKES INFERRED FROM BROADBAND GDSN DATA BY GEORGE L. CHOY AND JOHN BOATWRIGHT ABSTRACT The digital data base provided by the SRO and ASRO stations is exploited in a detailed body-wave analysis of the rupture process of two deep earthquakes...

..., it is important to monitor data quality to detect sensor failures rapidly and exclude anomalous data from processing. Here, we detect data anomalies and malfunctioning sensors by comparing instrumentally corrected waveforms between co‐located broadband and strong‐motion seismometers in Southern California Seismic...