7.08 Mantle Downwellings and the Fate of Subducting Slabs
... showing that intermediate- and deep-focus earthquakes occurred in narrow zones that are consistent with descending plate material beneath trenches (cf. Isacks et al., 1968). In addition, it was recognized that earthquake focal mechanisms of the deepest earthquakes are aligned with the axis of compre ...
... showing that intermediate- and deep-focus earthquakes occurred in narrow zones that are consistent with descending plate material beneath trenches (cf. Isacks et al., 1968). In addition, it was recognized that earthquake focal mechanisms of the deepest earthquakes are aligned with the axis of compre ...
Geological Structure and Time-Lapse Studies of CO2 Injection
... as other small-scale CCS projects (e.g. Kikuta et al., 2004; Michael et al., 2010), namely to evaluate and develop methods for CO2 monitoring. Even though the Ketzin project involves only injection of CO2 on a small scale, the methodology being employed is similar to what will be used on a larger sc ...
... as other small-scale CCS projects (e.g. Kikuta et al., 2004; Michael et al., 2010), namely to evaluate and develop methods for CO2 monitoring. Even though the Ketzin project involves only injection of CO2 on a small scale, the methodology being employed is similar to what will be used on a larger sc ...
NAVAL POSTGRADUATE SCHOOL
... (blue) of the Hedley et al. sun glint corrected image. ......................................37 Spectral plot of radiance by wavelength for a pixel with a low amount of sun glint at the deep water ROI location of (1, 3000) (red) of the test image and a pixel with a low amount of sun glint at the de ...
... (blue) of the Hedley et al. sun glint corrected image. ......................................37 Spectral plot of radiance by wavelength for a pixel with a low amount of sun glint at the deep water ROI location of (1, 3000) (red) of the test image and a pixel with a low amount of sun glint at the de ...
PDF
... 6 Hz fundamental frequency and up to two harmonics. Individual events cannot be correlated between nearby (<1 km) stations, implying the presence of multiple, small-amplitude sources positioned within the shallow crust. Tremor exhibits a semidiurnal periodicity, with some stations recording activit ...
... 6 Hz fundamental frequency and up to two harmonics. Individual events cannot be correlated between nearby (<1 km) stations, implying the presence of multiple, small-amplitude sources positioned within the shallow crust. Tremor exhibits a semidiurnal periodicity, with some stations recording activit ...
Crystal preferred orientation of an amphibole experimentally
... experimentally deformed amphibole in earlier studies showed a crystal plasticity at pressures of 0.5–2 GPa and temperatures of 600–800 °C (refs 23,24), with a slip system of (100)[001] and ð101Þ twinning. In addition, a brittle/ductile transition in experimentally deformed amphibolite was reported a ...
... experimentally deformed amphibole in earlier studies showed a crystal plasticity at pressures of 0.5–2 GPa and temperatures of 600–800 °C (refs 23,24), with a slip system of (100)[001] and ð101Þ twinning. In addition, a brittle/ductile transition in experimentally deformed amphibolite was reported a ...
Spectral Mixture Analysis for Monitoring and Mapping Desertification
... erosion in the study area. Interpretation of ancillary data and field observations verify the role of human impacts in the temporal change in both vegetation cover and sand soil. The findings of the study proved that SMA technique is powerful for characterisation and mapping of desertification proce ...
... erosion in the study area. Interpretation of ancillary data and field observations verify the role of human impacts in the temporal change in both vegetation cover and sand soil. The findings of the study proved that SMA technique is powerful for characterisation and mapping of desertification proce ...
Originally published as: Ivanova, A., Kashubin, A
... Data from the baseline and repeat surveys were limited to subsets where only traces that were common for both surveys were included in the processing in order to maximize repeatability in fold and azimuthal coverage. Processing of the repeat seismic data followed the same steps as the baseline data ...
... Data from the baseline and repeat surveys were limited to subsets where only traces that were common for both surveys were included in the processing in order to maximize repeatability in fold and azimuthal coverage. Processing of the repeat seismic data followed the same steps as the baseline data ...
study on the crop condition monitoring methods with remote sensing
... assessment, happen of crop diseases and insect pests, spreading degree of weed, etc. The application of diagnosis model was mostly needed by field management. Ever since 1990s, researchers work on diagnosis model paid more attention to field fertilization and water situation than other factors, a lo ...
... assessment, happen of crop diseases and insect pests, spreading degree of weed, etc. The application of diagnosis model was mostly needed by field management. Ever since 1990s, researchers work on diagnosis model paid more attention to field fertilization and water situation than other factors, a lo ...
Seismic and aseismic deformation along the East African Rift
... Therefore, sites close to or within the seismically active areas and/or plate boundaries are excluded. This is the case in Northern Africa (Moroccan sites TETN, IFR1, IFRN and RABT), in East Africa close to the Ethiopian rift (DAKE, BDAR, BHAL, DAMY, ROBE, ARMI, NAZR, ETJI, ADIS and ETAD) and along ...
... Therefore, sites close to or within the seismically active areas and/or plate boundaries are excluded. This is the case in Northern Africa (Moroccan sites TETN, IFR1, IFRN and RABT), in East Africa close to the Ethiopian rift (DAKE, BDAR, BHAL, DAMY, ROBE, ARMI, NAZR, ETJI, ADIS and ETAD) and along ...
Earthquake cycles and physical modeling of the process leading up... earthquake
... up to the event. This is a reflection of the above fact that the seismogenic layer is inhomogeneous. If, for instance, an entire earthquake fault were homogeneous and very weak, strong motion seismic waves would not be generated. For strong motion waves to be generated, the fault itself must be inho ...
... up to the event. This is a reflection of the above fact that the seismogenic layer is inhomogeneous. If, for instance, an entire earthquake fault were homogeneous and very weak, strong motion seismic waves would not be generated. For strong motion waves to be generated, the fault itself must be inho ...
Visit Site - Geothermal Data Repository
... Figure 58: Source-type plots of 100 moment tensors. ............................................................................... 72 Figure 59: Upper-hemisphere stereonets of principal axis for (a) 74 moment tensors for round 1 and (b) 26 moment tensors for round 2. ............................... ...
... Figure 58: Source-type plots of 100 moment tensors. ............................................................................... 72 Figure 59: Upper-hemisphere stereonets of principal axis for (a) 74 moment tensors for round 1 and (b) 26 moment tensors for round 2. ............................... ...
Satellite AIS - developing technology or existing
... (NASA Orbit Fact Sheet, 2011). The orbits vary depending on the expected service use for the satellite (see Figure 2). . Geostationary Earth Orbit (GEO). GEO satellites operate at an altitude of 35,786 km in orbit over the Equator (0 degrees latitude) at various longitudes. These satellites have an ...
... (NASA Orbit Fact Sheet, 2011). The orbits vary depending on the expected service use for the satellite (see Figure 2). . Geostationary Earth Orbit (GEO). GEO satellites operate at an altitude of 35,786 km in orbit over the Equator (0 degrees latitude) at various longitudes. These satellites have an ...
Determining crustal structure beneath seismic stations overlying a
... layered structures using P-to-S converted (Ps) phases from velocity discontinuities. However, the presence of low-velocity (relative to that of the bedrock) sediments can give rise to strong reverberations in the resulting RFs, frequently masking the Ps phases from crustal and mantle boundaries. Suc ...
... layered structures using P-to-S converted (Ps) phases from velocity discontinuities. However, the presence of low-velocity (relative to that of the bedrock) sediments can give rise to strong reverberations in the resulting RFs, frequently masking the Ps phases from crustal and mantle boundaries. Suc ...
Seismic Anisotropy of Subduction Zone Minerals–Contribution of
... Our picture of the seismic anisotropy of hydrated minerals remains incomplete; the elastic properties of many have not been measured even at ambient conditions (e.g., 10 Å phase and phase E) or not measured in their true elastic symmetry (e.g., clinochlore). The majority of hydrous minerals have not ...
... Our picture of the seismic anisotropy of hydrated minerals remains incomplete; the elastic properties of many have not been measured even at ambient conditions (e.g., 10 Å phase and phase E) or not measured in their true elastic symmetry (e.g., clinochlore). The majority of hydrous minerals have not ...
Crustal structure of the central Sunda margin at the onset of oblique
... common midpoint (CMP) distance of 12.5 m and a maximum fold of 30. Processing included frequency filtering after amplitude balancing and trace editing of the shot gathers. A primary focus during data processing was multiple removal, which was performed in the frequency–wavenumber ( f–k) domain enabl ...
... common midpoint (CMP) distance of 12.5 m and a maximum fold of 30. Processing included frequency filtering after amplitude balancing and trace editing of the shot gathers. A primary focus during data processing was multiple removal, which was performed in the frequency–wavenumber ( f–k) domain enabl ...
ADE7978/ADE7933/ADE7932
... The ADE7933/ADE7932 are isolated, 3-channel sigma-delta analog-to-digital converters (Σ-Δ ADCs) for polyphase energy metering applications that use shunt current sensors. The ADE7932 features two 24-bit ADCs, and the ADE7933 features three 24-bit ADCs. One channel is dedicated to measuring the volta ...
... The ADE7933/ADE7932 are isolated, 3-channel sigma-delta analog-to-digital converters (Σ-Δ ADCs) for polyphase energy metering applications that use shunt current sensors. The ADE7932 features two 24-bit ADCs, and the ADE7933 features three 24-bit ADCs. One channel is dedicated to measuring the volta ...
ADE7880 (Rev. B)
... or delta services with, both, three and four wires. The ADE7880 provides system calibration features for each phase, that is, rms offset correction, phase calibration, and gain calibration. The CF1, CF2, and CF3 logic outputs provide a wide choice of power information: total active powers, apparent ...
... or delta services with, both, three and four wires. The ADE7880 provides system calibration features for each phase, that is, rms offset correction, phase calibration, and gain calibration. The CF1, CF2, and CF3 logic outputs provide a wide choice of power information: total active powers, apparent ...
Laboratory measurements of elastic anisotropy parameters for the
... approximated by simple anisotropy (Thomsen 1986) or its modification (Tsvankin 1997b), we can use approximate methods to study velocity anisotropy. The most common case is transverse isotropy with only one symmetry axis (denoted TI hereafter). For weak TI, P- and S-wave velocities in all directions ...
... approximated by simple anisotropy (Thomsen 1986) or its modification (Tsvankin 1997b), we can use approximate methods to study velocity anisotropy. The most common case is transverse isotropy with only one symmetry axis (denoted TI hereafter). For weak TI, P- and S-wave velocities in all directions ...
Geological and geophysical evidence for large
... of active lithospheric extension suggest that there is no reason to think that the observed fault throws near the surface are not the superficial expression of large crustal faults. On the other hand, as it is suggested by Scholz (1990), the existence of an upper cut-off in seismicity seems limited ...
... of active lithospheric extension suggest that there is no reason to think that the observed fault throws near the surface are not the superficial expression of large crustal faults. On the other hand, as it is suggested by Scholz (1990), the existence of an upper cut-off in seismicity seems limited ...
Phase Transitions and Mineralogy of the Upper Mantle
... convective mantle, that is, the source of primary basaltic magmas, which implies significant heterogeneities also in the convecting mantle. Over the last decades, many studies addressed processes that may cause heterogeneities in the upper mantle, using both field-based and experimental investigatio ...
... convective mantle, that is, the source of primary basaltic magmas, which implies significant heterogeneities also in the convecting mantle. Over the last decades, many studies addressed processes that may cause heterogeneities in the upper mantle, using both field-based and experimental investigatio ...
Author`s personal copy - School of Arts and Sciences
... each section, we summarize the observations and highlight key consistencies, inconsistencies, interpretations and caveats. This study builds upon previous work by including: (a) reference to the large amount of literature published in the last decade, and (b) a wide variety of Earth Science discipli ...
... each section, we summarize the observations and highlight key consistencies, inconsistencies, interpretations and caveats. This study builds upon previous work by including: (a) reference to the large amount of literature published in the last decade, and (b) a wide variety of Earth Science discipli ...
Imaging crustal and upper mantle structure beneath the Colorado
... divided it into four subregions (Figure 1): CP‐NBR, CP‐SRM, CP‐SBR, and CP‐RGR. This division takes advantage of the dynamic deployment status of the TA stations (the majority in the west before January 2008, and full coverage largely in the east after December 2008). The phase velocities in the ove ...
... divided it into four subregions (Figure 1): CP‐NBR, CP‐SRM, CP‐SBR, and CP‐RGR. This division takes advantage of the dynamic deployment status of the TA stations (the majority in the west before January 2008, and full coverage largely in the east after December 2008). The phase velocities in the ove ...
Tri-Phase Control Installation Operating Instructions
... plug-in, printed circuit card, which is available as a separate part for field configuration of the control. A variety of field replaceable TCC modules are available: each provides a fixed time current curve characteristic. The range of curves available enables coordination between the TriPhase or T ...
... plug-in, printed circuit card, which is available as a separate part for field configuration of the control. A variety of field replaceable TCC modules are available: each provides a fixed time current curve characteristic. The range of curves available enables coordination between the TriPhase or T ...
Vertical stretching and crustal thickening at Nanga Parbat, Pakistan
... is a contractional fault system, the Liachar Thrust (sometimes rather vaguely termed the Raikhot Fault [e.g., Zeitler et al., 2001]), that runs near the base of the western flank of the massif. The discovery of a kilometer-wide zone of topNW, asymmetric shear in the hanging wall to the Liachar Thrus ...
... is a contractional fault system, the Liachar Thrust (sometimes rather vaguely termed the Raikhot Fault [e.g., Zeitler et al., 2001]), that runs near the base of the western flank of the massif. The discovery of a kilometer-wide zone of topNW, asymmetric shear in the hanging wall to the Liachar Thrus ...
Thematic Article Oceanic crust and Moho of the Pacific Plate in the
... Abstract To show the structure of oceanic crust and Moho around the eastern Ogasawara Plateau, we have analyzed industry-standard two-dimensional multichannel seismic reflection data. To obtain improved velocity models, phase information of seismic signals was used for velocity analysis and velocity ...
... Abstract To show the structure of oceanic crust and Moho around the eastern Ogasawara Plateau, we have analyzed industry-standard two-dimensional multichannel seismic reflection data. To obtain improved velocity models, phase information of seismic signals was used for velocity analysis and velocity ...