C:\Users\Jim\Documents\usb key\my stuff from Tardis\Seismic
... 2) a) What is the maximum speed of the rock at the rupture point when the fault gives way? (check notes) b) To what wave speed does this correspond? 3) If you live near where a fault intersects the surface, does this mean that your home is going to be near the epicenter when an earthquake occurs on ...
... 2) a) What is the maximum speed of the rock at the rupture point when the fault gives way? (check notes) b) To what wave speed does this correspond? 3) If you live near where a fault intersects the surface, does this mean that your home is going to be near the epicenter when an earthquake occurs on ...
Exploring the seismic expression of fault zones in 3D
... dataset. Our approach uses seismic attributes to provide information carried by the seismic signal that is otherwise not used in conventional seismic mapping. When interpreting stratigraphic features such as channels and marginal units to carbonate reefs (Marfurt and Chopra, 2007), different attribu ...
... dataset. Our approach uses seismic attributes to provide information carried by the seismic signal that is otherwise not used in conventional seismic mapping. When interpreting stratigraphic features such as channels and marginal units to carbonate reefs (Marfurt and Chopra, 2007), different attribu ...
Simulating migrated seismic data by filtering an earth model A
... migration image, migrated data are simulated by generating 3D synthetic data, followed by the process of migration. However, this approach has a very high computational cost. Therefore, it is not often used to validate an earth model. The current industry practice of simulating seismic data in the d ...
... migration image, migrated data are simulated by generating 3D synthetic data, followed by the process of migration. However, this approach has a very high computational cost. Therefore, it is not often used to validate an earth model. The current industry practice of simulating seismic data in the d ...
here - GeoPRISMS
... spectrum of stages of continental breakup, with increased emphasis on the interplay between surface processes, sedimentation, and continental evolution. It will include early-stage rifts but also the study of passive margins, which archive the entire history of rift zone construction and evolution. ...
... spectrum of stages of continental breakup, with increased emphasis on the interplay between surface processes, sedimentation, and continental evolution. It will include early-stage rifts but also the study of passive margins, which archive the entire history of rift zone construction and evolution. ...
Geology - Regional School District 13
... 1. Humans depend on Earth for resources that are limited and are distributed unevenly around the planet. 2. Earth is our home; we depend on its resources that mold civilizations, drive human exploration, and inspire human endeavors that include art, literature, and science. 3. Soil, rocks and minera ...
... 1. Humans depend on Earth for resources that are limited and are distributed unevenly around the planet. 2. Earth is our home; we depend on its resources that mold civilizations, drive human exploration, and inspire human endeavors that include art, literature, and science. 3. Soil, rocks and minera ...
Stress Transfer Eart..
... • Short term: can trigger subsequent events (aftershocks are the best example of this). This is generally dependent on the conditions prior to the event (how close to failure was a certain area before the change in stress field) • Long term: can affect timing of subsequent events, bringing them eith ...
... • Short term: can trigger subsequent events (aftershocks are the best example of this). This is generally dependent on the conditions prior to the event (how close to failure was a certain area before the change in stress field) • Long term: can affect timing of subsequent events, bringing them eith ...
Mechanism of Formation of Active Margins.
... adjacent oceanic regions (Baraza ngi . lsacks. 1971). Sud properties of the mantle are normally observed from the Benioff zo nes tothe conti nen ts for a d istance - 1000 km in a hori zontal direct ion and from the Moho boundary d own 10 a dep lh - 250-300 km in a vertical direct io n. Thus the volu ...
... adjacent oceanic regions (Baraza ngi . lsacks. 1971). Sud properties of the mantle are normally observed from the Benioff zo nes tothe conti nen ts for a d istance - 1000 km in a hori zontal direct ion and from the Moho boundary d own 10 a dep lh - 250-300 km in a vertical direct io n. Thus the volu ...
Locating hydrothermal acoustic sources at Old Faithful Geyser using
... array. Thus, MFP cumulates the advantage of (1) a better signal-tonoise ratio through the stacking of events in the time interval T and (2) an automatic procedure to localize the dominant seismic source as a function of time for long recordings. Historically, MFP is a localization technique commonly ...
... array. Thus, MFP cumulates the advantage of (1) a better signal-tonoise ratio through the stacking of events in the time interval T and (2) an automatic procedure to localize the dominant seismic source as a function of time for long recordings. Historically, MFP is a localization technique commonly ...
1 Lecture 24: Convergent boundaries November 22, 2006
... Convergent boundaries are characterized by consumption of oceaninc crust in subduction zones, with attendant arc volcanism, metamorphism and uplift. During their early phases, convergent boundaries are initiated by the rupture and sinking of oceanic crust , probably related to a change in plate moti ...
... Convergent boundaries are characterized by consumption of oceaninc crust in subduction zones, with attendant arc volcanism, metamorphism and uplift. During their early phases, convergent boundaries are initiated by the rupture and sinking of oceanic crust , probably related to a change in plate moti ...
Lithospheric and upper mantle structure of the northeastern Tibetan
... The I4 array stations were equipped with 5 Guralp CMG3ESP sensors with a flat velocity response between 30 s to 0.02 s, 46 Streckeisen STS-2 sensors and 44 Guralp CMG3 T sensors both with a flat velocity response between 120 s to 0.02 s. All I4 stations used the RefTek 130 data acquisition system at ...
... The I4 array stations were equipped with 5 Guralp CMG3ESP sensors with a flat velocity response between 30 s to 0.02 s, 46 Streckeisen STS-2 sensors and 44 Guralp CMG3 T sensors both with a flat velocity response between 120 s to 0.02 s. All I4 stations used the RefTek 130 data acquisition system at ...
Long-term survival of the axial valley morphology at abandoned slow-spreading centers
... fast-spreading center, where low viscosities prevent the formation of an axial valley (Chen and Morgan, 1990). Our model also suggests that no obvious mechanism exists in which the rift-bounding normal faults can be reversed. In fact, extinction of a spreading center could lead to additional normal ...
... fast-spreading center, where low viscosities prevent the formation of an axial valley (Chen and Morgan, 1990). Our model also suggests that no obvious mechanism exists in which the rift-bounding normal faults can be reversed. In fact, extinction of a spreading center could lead to additional normal ...
Structure of the crust and uppermost mantle of Iceland from
... crust between the domes. The track of the ICEMELT pro¢le passes between the three central volcanoes beneath northwest Vatnajo«kull. It is also possible that a low-density body such as a volume of hot rock or a melt body exists in the upper crust below the Gr|¨msvo«tn region. The detailed gravity stu ...
... crust between the domes. The track of the ICEMELT pro¢le passes between the three central volcanoes beneath northwest Vatnajo«kull. It is also possible that a low-density body such as a volume of hot rock or a melt body exists in the upper crust below the Gr|¨msvo«tn region. The detailed gravity stu ...
crustal velocity structure of the rukwa rift in the western
... Imaging crustal structure beneath the Rukwa Rift is not only important for determining the amount of crustal modification that may have occurred as a result of lithospheric extension, but also for improving our understanding of why lower crustal earthquakes occur frequently in east Africa. The only ...
... Imaging crustal structure beneath the Rukwa Rift is not only important for determining the amount of crustal modification that may have occurred as a result of lithospheric extension, but also for improving our understanding of why lower crustal earthquakes occur frequently in east Africa. The only ...
A 3D model of the crust and uppermost mantle beneath the Central
... great variety of geological and tectonic features are revealed in the 3-D model that form the basis for future detailed local to regional scale analysis and interpretation. Citation: Shen W., M. H. Ritzwoller, and V. Schulte-Pelkum (2013), A 3-D model of the crust and uppermost mantle beneath the Ce ...
... great variety of geological and tectonic features are revealed in the 3-D model that form the basis for future detailed local to regional scale analysis and interpretation. Citation: Shen W., M. H. Ritzwoller, and V. Schulte-Pelkum (2013), A 3-D model of the crust and uppermost mantle beneath the Ce ...
Asthenospheric flow and origin of volcanism in the Baikal Rift area
... The origin of low-volume, hotspot-like volcanism often observed in continental rift areas is debated, as is the nature of the flow in the mantle beneath. In this paper we assemble seismic constraints on the mantle flow below the Baikal Rift Zone. We combine new evidence from upper-mantle tomography ...
... The origin of low-volume, hotspot-like volcanism often observed in continental rift areas is debated, as is the nature of the flow in the mantle beneath. In this paper we assemble seismic constraints on the mantle flow below the Baikal Rift Zone. We combine new evidence from upper-mantle tomography ...
pdf file - Berkeley Seismological Laboratory
... Rotation of coordinate system • Instruments are generally oriented (Z, N, E) • Ray path is in the vertical plane containing the source and the receiver • In the horizontal plane tangent to the earth’s surface at the location of the station, we want to rotate the coordinate system from (N,E) to ...
... Rotation of coordinate system • Instruments are generally oriented (Z, N, E) • Ray path is in the vertical plane containing the source and the receiver • In the horizontal plane tangent to the earth’s surface at the location of the station, we want to rotate the coordinate system from (N,E) to ...
Geologic History - Teacher Friendly Guides
... formed the Catskill Delta, creating a new wedge of sediments stretching into a shallow inland sea; the Devonian and Mississippian rocks of Ohio are evidence of this event. At the time of the Acadian mountain building and subsequent erosion during the Devonian, the Midwest was located at the Equator ...
... formed the Catskill Delta, creating a new wedge of sediments stretching into a shallow inland sea; the Devonian and Mississippian rocks of Ohio are evidence of this event. At the time of the Acadian mountain building and subsequent erosion during the Devonian, the Midwest was located at the Equator ...
Snacktectonics
... and one piece of crust away from you, making sure that the long sides are “rubbing” as you are sliding. Do the after diagram-overhead view! Scrape any asthenosphere off the crust and gently lay the pieces of continental crust to the side. ...
... and one piece of crust away from you, making sure that the long sides are “rubbing” as you are sliding. Do the after diagram-overhead view! Scrape any asthenosphere off the crust and gently lay the pieces of continental crust to the side. ...
Locating the Epicenter
... and at least three seismometers. The epicenter is the place on the surface of Earth directly above where the earthquake occurred (see diagram below). In this lesson students use information from seismographs in Hawaiÿi to find the epicenter of an earthquake near Mauna Loa Volcano. ...
... and at least three seismometers. The epicenter is the place on the surface of Earth directly above where the earthquake occurred (see diagram below). In this lesson students use information from seismographs in Hawaiÿi to find the epicenter of an earthquake near Mauna Loa Volcano. ...
On the Correlation between Seismicity Characteristics and S Wave
... (including the analysis of arrival direction and apparent velocities, polarization, space–time variations, etc.). The analysis suggests that the Sn and Lg codas have a similar origin; they are mostly composed of shear reflections from numerous subhorizontal interfaces in the upper mantle. As lapse t ...
... (including the analysis of arrival direction and apparent velocities, polarization, space–time variations, etc.). The analysis suggests that the Sn and Lg codas have a similar origin; they are mostly composed of shear reflections from numerous subhorizontal interfaces in the upper mantle. As lapse t ...
Contributions of poroelastic rebound and a weak volcanic arc to the
... believe that it is important to understand the possible contributions of these higher-order effects to the postseismic deformation field as they will impact any postseismic deformation models which parameterize structure and properties of the Earth through comparing with observations. In this paper, ...
... believe that it is important to understand the possible contributions of these higher-order effects to the postseismic deformation field as they will impact any postseismic deformation models which parameterize structure and properties of the Earth through comparing with observations. In this paper, ...
Rheological heterogeneity, mechanical anisotropy and
... This paper aims to present an overview on the influence of rheological heterogeneity and mechanical anisotropy on the deformation of continents. After briefly recapping the concept of rheological stratification of the lithosphere, we discuss two specific issues: (1) as supported by a growing body of ...
... This paper aims to present an overview on the influence of rheological heterogeneity and mechanical anisotropy on the deformation of continents. After briefly recapping the concept of rheological stratification of the lithosphere, we discuss two specific issues: (1) as supported by a growing body of ...
vauchez_etal_rheology_1998_hal
... This paper aims to present an overview on the influence of rheological heterogeneity and mechanical anisotropy on the deformation of continents. After briefly recapping the concept of rheological stratification of the lithosphere, we discuss two specific issues: (1) as supported by a growing body of ...
... This paper aims to present an overview on the influence of rheological heterogeneity and mechanical anisotropy on the deformation of continents. After briefly recapping the concept of rheological stratification of the lithosphere, we discuss two specific issues: (1) as supported by a growing body of ...
Lithospheric structure of the Rio Grande rift
... Rio Grande rift region of the southwestern United States has produced new images of upper-mantle velocity structure and crust–mantle topography. Synthesizing these results with geochemical7–9 and other geophysical10–13 evidence reveals highly symmetric lower-crustal and upper-mantle lithosphere exte ...
... Rio Grande rift region of the southwestern United States has produced new images of upper-mantle velocity structure and crust–mantle topography. Synthesizing these results with geochemical7–9 and other geophysical10–13 evidence reveals highly symmetric lower-crustal and upper-mantle lithosphere exte ...
Earthscope
Earthscope is an earth science program using geological and geophysical techniques to explore the structure and evolution of the North American continent and to understand the processes controlling earthquakes and volcanoes. The project has three components: USARRAY, the Plate Boundary Observatory, and the San Andreas Fault Observatory at Depth.The project is funded by the National Science Foundation (NSF), and the data produced is publicly accessible in real-time. Organizations associated with the project include UNAVCO, the Incorporated Research Institutions for Seismology (IRIS), Stanford University, the United States Geological Survey (USGS) and National Aeronautics and Space Administration (NASA). Several international organizations also contribute to the initiative.