Lithospheric and upper mantle structure of the northeastern Tibetan
... Moho and the light dashed lines identify the underthrust Lhasa Terrane lithosphere slab (ULS) and the crustal layers. These lines were taken from the P wave migration image and plotted on the other images for comparison. corner frequency of 2.5 Hz was applied to the deconvolved traces. In the classi ...
... Moho and the light dashed lines identify the underthrust Lhasa Terrane lithosphere slab (ULS) and the crustal layers. These lines were taken from the P wave migration image and plotted on the other images for comparison. corner frequency of 2.5 Hz was applied to the deconvolved traces. In the classi ...
The ocean-continent boundary in the Gulf of Lion from analysis of
... reflections and wide-angle reflections and refractions to derive a complete traveltime solution. The modelling was further improved by matching computed reflectivity seismograms in the x-t domain and z-p domain. We were not able to reinterpret all the ESPs shot along the ECORS-CROP seismic profile. ...
... reflections and wide-angle reflections and refractions to derive a complete traveltime solution. The modelling was further improved by matching computed reflectivity seismograms in the x-t domain and z-p domain. We were not able to reinterpret all the ESPs shot along the ECORS-CROP seismic profile. ...
Uplift at lithospheric swellsI: seismic and gravity
... subsequent top-of-plate load volume and mass calculation, but can also be interpreted to infer the extent of, if any, crustal thickening by underplating or intracrustal density change as a result of magmatic intrusion. Such observed horizons can be compared to those predicted from elastic plate flex ...
... subsequent top-of-plate load volume and mass calculation, but can also be interpreted to infer the extent of, if any, crustal thickening by underplating or intracrustal density change as a result of magmatic intrusion. Such observed horizons can be compared to those predicted from elastic plate flex ...
Shear zones in the Proterozoic lithosphere of the
... Seismic velocity discontinuities are commonly found within the upper 100 km of the mantle lithosphere, with great variability in their depth, lateral extent, and the polarity of velocity jump. Among the more commonly observed is the ‘80 km’ or Hales discontinuity, identified in a variety of tectonic ...
... Seismic velocity discontinuities are commonly found within the upper 100 km of the mantle lithosphere, with great variability in their depth, lateral extent, and the polarity of velocity jump. Among the more commonly observed is the ‘80 km’ or Hales discontinuity, identified in a variety of tectonic ...
Seismic reflection imaging of mineral systems
... Identifying fluid source regions in seismic images may be difficult. The dehydration of a large area of crust to create mineralising fluids will not necessarily leave an observable physical imprint on the rocks that distinguishes that region from any other region, especially in metamorphic rocks. T ...
... Identifying fluid source regions in seismic images may be difficult. The dehydration of a large area of crust to create mineralising fluids will not necessarily leave an observable physical imprint on the rocks that distinguishes that region from any other region, especially in metamorphic rocks. T ...
Seismic velocities, density, porosity, and permeability measured at a
... Hsu (2007) measured the values of vp and vs under an atmosphere pressure on the discrete rock samples from which the value of vp/vs are calculated. For some samples (e.g. R287sec1 and R351sec2 in Table 1), he measured the values of vp and vs in two segments with different thicknesses. Hence, we calc ...
... Hsu (2007) measured the values of vp and vs under an atmosphere pressure on the discrete rock samples from which the value of vp/vs are calculated. For some samples (e.g. R287sec1 and R351sec2 in Table 1), he measured the values of vp and vs in two segments with different thicknesses. Hence, we calc ...
Essential Physics Activities on a Budget Price
... represent a few of what I personally consider the "best for the buck" when it comes to introductory physics' essential laboratory activities on a tight budget. I have used all of them in high school and/or introductory undergraduate physics courses. Activities similar to these using a variety of mat ...
... represent a few of what I personally consider the "best for the buck" when it comes to introductory physics' essential laboratory activities on a tight budget. I have used all of them in high school and/or introductory undergraduate physics courses. Activities similar to these using a variety of mat ...
Physics 1010: The Physics of Everyday Life
... • Acceleration is – Change in velocity divided by elapsed time – Slope on velocity versus time graph • Position is related to acceleration • Acceleration given by force (F = ma) • Position, Velocity, Acceleration are all ...
... • Acceleration is – Change in velocity divided by elapsed time – Slope on velocity versus time graph • Position is related to acceleration • Acceleration given by force (F = ma) • Position, Velocity, Acceleration are all ...
1 Apparent vertical Moho offsets under continental strike
... We use determined velocity models from two opposite sides of the fault locations indicated in Fig. 1 (yellow circles). The first location is on the San Andreas Fault (SAF) south of Hollister in central California, and the second is on the San Jacinto Fault Zone (SJF) between Hemet and Anza in southe ...
... We use determined velocity models from two opposite sides of the fault locations indicated in Fig. 1 (yellow circles). The first location is on the San Andreas Fault (SAF) south of Hollister in central California, and the second is on the San Jacinto Fault Zone (SJF) between Hemet and Anza in southe ...
Physical Science - Iredell
... I can explain how frame of reference is important when discussing the speed or velocity of something. I can identify distance and displacement as a scalar-vector pair. I can compare velocity and speed using scalars and vectors. I can mathematically determine the velocity of a moving object I can mat ...
... I can explain how frame of reference is important when discussing the speed or velocity of something. I can identify distance and displacement as a scalar-vector pair. I can compare velocity and speed using scalars and vectors. I can mathematically determine the velocity of a moving object I can mat ...
Structural uplift beneath the Chicxulub impact structure
... We used the 3D version of the FAST (First Arrival Seismic Tomography) code, which is an iterative tomographic inversion developed by Zelt and Barton [1998]. In our 1D starting velocity model, velocities are defined over 500-m length cubes, in a 3D volume that is 110 km x 100 km and 15 km in depth. F ...
... We used the 3D version of the FAST (First Arrival Seismic Tomography) code, which is an iterative tomographic inversion developed by Zelt and Barton [1998]. In our 1D starting velocity model, velocities are defined over 500-m length cubes, in a 3D volume that is 110 km x 100 km and 15 km in depth. F ...
Deep reflection seismic experiments in western Poland
... However, beneath the base of the Zechskin fragments of boundaries were observed along the whole profile, though their dynamics and traceability vary. These bundanes seem to reflect geological reality because of their high stacking velocities and often discordant position in relation to mpejacent bou ...
... However, beneath the base of the Zechskin fragments of boundaries were observed along the whole profile, though their dynamics and traceability vary. These bundanes seem to reflect geological reality because of their high stacking velocities and often discordant position in relation to mpejacent bou ...
Continental hyperextension, mantle exhumation and thin oceanic
... recorded by the earliest oceanic crust. However, the late stages of continental extension and the eventual breakup of the continent, at the Iberia-Newfoundland margin, occurred during the Cretaceous constant polarity interval (121–83 Ma), resulting in a lack of strong magnetic reversals which would ...
... recorded by the earliest oceanic crust. However, the late stages of continental extension and the eventual breakup of the continent, at the Iberia-Newfoundland margin, occurred during the Cretaceous constant polarity interval (121–83 Ma), resulting in a lack of strong magnetic reversals which would ...
- Wiley Online Library
... recorded by the earliest oceanic crust. However, the late stages of continental extension and the eventual breakup of the continent, at the Iberia-Newfoundland margin, occurred during the Cretaceous constant polarity interval (121–83 Ma), resulting in a lack of strong magnetic reversals which would ...
... recorded by the earliest oceanic crust. However, the late stages of continental extension and the eventual breakup of the continent, at the Iberia-Newfoundland margin, occurred during the Cretaceous constant polarity interval (121–83 Ma), resulting in a lack of strong magnetic reversals which would ...
Document
... The objective of this report is to investigate the effects of mass, surface area and speed of a moving object on force of kinetic friction as underlined with the research question as “How do mass, surface area and speed of moving object affect the force of kinetic friction?” Therefore, the method em ...
... The objective of this report is to investigate the effects of mass, surface area and speed of a moving object on force of kinetic friction as underlined with the research question as “How do mass, surface area and speed of moving object affect the force of kinetic friction?” Therefore, the method em ...
Molnar, P., and G. A. Houseman (2013), Rayleigh
... surface rises (subsides) above regions where mantle lithosphere thickens and descends (thins and rises). Ignoring vertical variations of viscosity within the crust and mantle lithosphere, we find that the maximum surface height occurs for approximately equal viscosities of crust and mantle lithospher ...
... surface rises (subsides) above regions where mantle lithosphere thickens and descends (thins and rises). Ignoring vertical variations of viscosity within the crust and mantle lithosphere, we find that the maximum surface height occurs for approximately equal viscosities of crust and mantle lithospher ...
Thematic Article Oceanic crust and Moho of the Pacific Plate in the
... used for velocity analysis and velocity models for oceanic crust above Moho were determined. We apply this velocity analysis technique to seismic reflection data around the eastern Ogasawara Plateau, with the result of clear images of structures within oceanic crust and Moho. South of the Ogasawara ...
... used for velocity analysis and velocity models for oceanic crust above Moho were determined. We apply this velocity analysis technique to seismic reflection data around the eastern Ogasawara Plateau, with the result of clear images of structures within oceanic crust and Moho. South of the Ogasawara ...
Seismic characterization of kerogen maturity: An example from Bakken shale
... Effects of kerogen maturity on geomechanical properties Hydraulic fracturing is necessary for production from the shale. Hydraulic fracturing is successful for more brittle shale rocks. The concept of brittleness combines seismic derived properties such as Young’s modulus (E) and Poisson’s ratio (υ) ...
... Effects of kerogen maturity on geomechanical properties Hydraulic fracturing is necessary for production from the shale. Hydraulic fracturing is successful for more brittle shale rocks. The concept of brittleness combines seismic derived properties such as Young’s modulus (E) and Poisson’s ratio (υ) ...
Geological Survey of Finland
... taken into account in the interpretation. The transient electromagnetic method (TEM) functions in the time domain. TEM is also a short-range method and can very reliably reveal nearby conductors. Comparisons of RIM and TEM data from the ore district coincide well. These issues are considered in deta ...
... taken into account in the interpretation. The transient electromagnetic method (TEM) functions in the time domain. TEM is also a short-range method and can very reliably reveal nearby conductors. Comparisons of RIM and TEM data from the ore district coincide well. These issues are considered in deta ...
Fulltext - ETH E
... along the Eurasia-Africa suture zone is characterized by high-velocity material representing subducted oceanic lithosphere. This signature can be followed to as deep as 300-600 km, depending on the region and/or resolution. A high velocity body, possibly representing a fragment of subducted lithosph ...
... along the Eurasia-Africa suture zone is characterized by high-velocity material representing subducted oceanic lithosphere. This signature can be followed to as deep as 300-600 km, depending on the region and/or resolution. A high velocity body, possibly representing a fragment of subducted lithosph ...
Reference Rock Site Condition for Central and Eastern
... developed using P-wave inversions. Using an assumed Poisson’s ratio of 0.25, Vs was estimated from Vp and was not based on direct measurements. The estimated Vs of the surface layer ranges from 2.31 to 2.83 km/sec with a value of 2.83 km/sec for 12 of 16 profiles. Additionally, the EPRI (1993) study ...
... developed using P-wave inversions. Using an assumed Poisson’s ratio of 0.25, Vs was estimated from Vp and was not based on direct measurements. The estimated Vs of the surface layer ranges from 2.31 to 2.83 km/sec with a value of 2.83 km/sec for 12 of 16 profiles. Additionally, the EPRI (1993) study ...
Australian Journal of Earth Sciences Structure of the Tasmanian
... Seismic data from three separate experiments, a marine active source survey with land-based stations, and two teleseismic arrays deployed to record distant earthquakes, are combined in a joint inversion for the 3D seismic structure of the Tasmanian lithosphere. In total, travel-time information from ...
... Seismic data from three separate experiments, a marine active source survey with land-based stations, and two teleseismic arrays deployed to record distant earthquakes, are combined in a joint inversion for the 3D seismic structure of the Tasmanian lithosphere. In total, travel-time information from ...
34. The Geological and Geophysical Setting near Site 462
... During the site survey, two refraction lines were shot to an array of ocean-bottom seismometers (OBS). The locations of the lines are shown in Figure 3. The lines were shot as two split profiles, crossing at the OBS array. The shot sizes ranged between 0.5 kg near the OBS and 54 kg at the maximum ra ...
... During the site survey, two refraction lines were shot to an array of ocean-bottom seismometers (OBS). The locations of the lines are shown in Figure 3. The lines were shot as two split profiles, crossing at the OBS array. The shot sizes ranged between 0.5 kg near the OBS and 54 kg at the maximum ra ...
Crustal structure across the post-spreading - Archimer
... Firstly, we establish the initial model for RayInvr based on the single channel seismic profile (Fig. 7a), the seismic phases of the nine OBSs, located along the profile G8G0, and regional geological and geophysical data (Yao and Wang, 1983; Liu, 2000; Li et al., 2015). The model consists of five la ...
... Firstly, we establish the initial model for RayInvr based on the single channel seismic profile (Fig. 7a), the seismic phases of the nine OBSs, located along the profile G8G0, and regional geological and geophysical data (Yao and Wang, 1983; Liu, 2000; Li et al., 2015). The model consists of five la ...
Surface wave inversion
Inversion is the set of methods used to infer properties through physical measurements. Surface wave inversion is the method by which elastic properties, density, and thickness of layers in the subsurface are attained through analysis of surface wavedispersion. The entire inversion process requires the gathering of seismic data, the creation of dispersion curves, and finally the inference of subsurface properties.