Elastic Anisotropy of a Metamorphic Rock Sample of the Canadian
... near-offset VSP. The polarization direction of the faster shear wave was found to coincide with the steeply dipping rock formation of dominantly biotite gneiss. Under the assumption of hexagonal-type symmetry, the average anisotropy of the gneiss was estimated using the leastsquares fit method with ...
... near-offset VSP. The polarization direction of the faster shear wave was found to coincide with the steeply dipping rock formation of dominantly biotite gneiss. Under the assumption of hexagonal-type symmetry, the average anisotropy of the gneiss was estimated using the leastsquares fit method with ...
Erratum - Forward
... The presence of hydrogen can affect elastic properties and seismic velocities of minerals in the Earth's upper mantle. In this study, the secondorder elastic constants of hydrous wadsleyites containing 0.37, 0.84, and 1.66 wt.% H2O were determined by Brillouin scattering at ambient conditions. Measu ...
... The presence of hydrogen can affect elastic properties and seismic velocities of minerals in the Earth's upper mantle. In this study, the secondorder elastic constants of hydrous wadsleyites containing 0.37, 0.84, and 1.66 wt.% H2O were determined by Brillouin scattering at ambient conditions. Measu ...
47. Structure and Evolution of the Central Kerguelen Plateau
... suggested that the typical volcanic morphology was eroded from the SKP, leaving this large area without apparent volcanic sources as in the NKP. Figure 4 shows the two types of basement on two MCS profiles. Nonreflective acoustic basement is observed on Profile RS 02-13 from shotpoints 9400 to 9600 ...
... suggested that the typical volcanic morphology was eroded from the SKP, leaving this large area without apparent volcanic sources as in the NKP. Figure 4 shows the two types of basement on two MCS profiles. Nonreflective acoustic basement is observed on Profile RS 02-13 from shotpoints 9400 to 9600 ...
Nuclei, Excitation, Relaxation
... return to longitudingl axis- some get low… T1 Some low energy spins - absorb energy - enter the high energy state… some get high ...
... return to longitudingl axis- some get low… T1 Some low energy spins - absorb energy - enter the high energy state… some get high ...
Earthquake fault of the 26 May 2006 Yogyakarta earthquake
... the magnitude of the earthquake as Mw 6.3 (USGS Preliminary Earthquake Report, 2006). Subsequently, ∼750 aftershocks have been reported, with the largest one measured at Mw 5.2. About 6000 people were killed, 50,000 were injured, and as many as 600,000 people were displaced in the Bantul-Yogyakarta ...
... the magnitude of the earthquake as Mw 6.3 (USGS Preliminary Earthquake Report, 2006). Subsequently, ∼750 aftershocks have been reported, with the largest one measured at Mw 5.2. About 6000 people were killed, 50,000 were injured, and as many as 600,000 people were displaced in the Bantul-Yogyakarta ...
Geological and geophysical evidence for large
... Fig. 4. The hypocentres range from depths of about 5 to 20 km and are clearly bounded by straight lines which are well correlated near the surface with the location and the geometry of the two border faults. The recent seismic activity linked to the Peel Boundary Fault is more significant and corres ...
... Fig. 4. The hypocentres range from depths of about 5 to 20 km and are clearly bounded by straight lines which are well correlated near the surface with the location and the geometry of the two border faults. The recent seismic activity linked to the Peel Boundary Fault is more significant and corres ...
Receiver function constraints on crustal seismic velocities and
... spreading center. It is necessary, however, to specify that our profile traverses a complex area affected by the interaction of three rift propagators, and thus, our results and conclusions may not be readily applicable to typical continental rifts or to other regions within the Afar or the MER. ...
... spreading center. It is necessary, however, to specify that our profile traverses a complex area affected by the interaction of three rift propagators, and thus, our results and conclusions may not be readily applicable to typical continental rifts or to other regions within the Afar or the MER. ...
Lithospheric structure of Tasmania from a novel form of teleseismic
... [1] In 2001 and 2002, a temporary array of 72 seismic recorders was deployed across ...
... [1] In 2001 and 2002, a temporary array of 72 seismic recorders was deployed across ...
Recent Refinements in Geophysical Constraints on Lunar Origin
... center-of-figure from the center-of-mass (Kaula et al., 1974). While the average farside crustal thickness is greater than that on the nearside, the distribution is nonuniform. Most significantly, the South Pole-Aitken Basin on the lunar farside is an extensive region of crust that is much thinner t ...
... center-of-figure from the center-of-mass (Kaula et al., 1974). While the average farside crustal thickness is greater than that on the nearside, the distribution is nonuniform. Most significantly, the South Pole-Aitken Basin on the lunar farside is an extensive region of crust that is much thinner t ...
Evidence for temporal variation of seismic velocity within the upper
... events recorded at a three-component instrument located at 4 km depth from a hydraulic fracturing experiment at 9 km depth. In a large set of seismicevents recorded during the experiment, many can be associatedwith multiplets exhibiting essentially identical waveforms. Since they must have approxima ...
... events recorded at a three-component instrument located at 4 km depth from a hydraulic fracturing experiment at 9 km depth. In a large set of seismicevents recorded during the experiment, many can be associatedwith multiplets exhibiting essentially identical waveforms. Since they must have approxima ...
Non-hotspot volcano chains from small
... deformation is characterized by much smaller wavelengths (50-500 km) than that, which are commonly expected for PLI (>1000 km); (2) plume head flattening is asymmetric below intra-plate boundaries, which leads to mechanical decoupling of crust from mantle lithosphere, and to localized faulting at t ...
... deformation is characterized by much smaller wavelengths (50-500 km) than that, which are commonly expected for PLI (>1000 km); (2) plume head flattening is asymmetric below intra-plate boundaries, which leads to mechanical decoupling of crust from mantle lithosphere, and to localized faulting at t ...
Mantle Discontinuities - Northwestern University
... 5.4% and a density contrast of 3.9%. Their travel time correlations are consistent with an exothermic (i.e., positive P-T slope) phase transition near 400 km, with about 12 km of long-wavelength topography on the boundary. Bock 119881 reports observation of S-P conversions from 400 km depth beneath ...
... 5.4% and a density contrast of 3.9%. Their travel time correlations are consistent with an exothermic (i.e., positive P-T slope) phase transition near 400 km, with about 12 km of long-wavelength topography on the boundary. Bock 119881 reports observation of S-P conversions from 400 km depth beneath ...
- White Rose Research Online
... in that area in more than 150 years. Shaking was widely felt throughout New Zealand with widespread damage occurring across the northern South Island. Global moment tensor solutions showed a combination reverse and strike slip faulting with a strong non-double couple component. Aftershocks follow a ...
... in that area in more than 150 years. Shaking was widely felt throughout New Zealand with widespread damage occurring across the northern South Island. Global moment tensor solutions showed a combination reverse and strike slip faulting with a strong non-double couple component. Aftershocks follow a ...
Dynamic lithosphere within the Great Basin
... tectonics listed above. These analyses are done independently, allowing for us to compare results between the two methods and further constrain crustal and upper mantle structure. For the receiver function analysis, we calculated Ps receiver functions at 265 stations within the Great Basin and surro ...
... tectonics listed above. These analyses are done independently, allowing for us to compare results between the two methods and further constrain crustal and upper mantle structure. For the receiver function analysis, we calculated Ps receiver functions at 265 stations within the Great Basin and surro ...
Magnetotellurics
Magnetotellurics (MT) is an electromagnetic geophysical method for inferring the earth's subsurface electrical conductivity from measurements of natural geomagnetic and geoelectric field variation at the Earth's surface. Investigation depth ranges from 300m below ground by recording higher frequencies down to 10,000m or deeper with long-period soundings. Developed in the USSR and France during the 1950s, MT is now an international academic discipline and is used in exploration surveys around the world. Commercial uses include hydrocarbon (oil and gas) exploration, geothermal exploration, mining exploration, as well as hydrocarbon and groundwater monitoring. Research applications include experimentation to further develop the MT technique, long-period deep crustal exploration, and earthquake precursor prediction research.