Subduction history of the Farallon plate under North America
... •Color signifies depth. We can confidently image ~1500 km deep. ...
... •Color signifies depth. We can confidently image ~1500 km deep. ...
The evolution of shallow crustal structures in early rift
... Here we use seismic stratigraphy analysis of the UL9905 high resolution reflection seismic dataset acquired by the Lamont-Doherty Earth Observatory, Caltech, and the Centro de Investigación Científica y de Educación Superior de Ensenada to build on previous structural interpretations and seek to fur ...
... Here we use seismic stratigraphy analysis of the UL9905 high resolution reflection seismic dataset acquired by the Lamont-Doherty Earth Observatory, Caltech, and the Centro de Investigación Científica y de Educación Superior de Ensenada to build on previous structural interpretations and seek to fur ...
GREENLAND - SUMMARY OF HYDROCARBON GEOLOGY
... have acquired substantial additional databases including 2D and 3D seismic, gravity, magnetic, EM surveys and seep surveys, and Cairn Energy together with Nunaoil and Petronas are presently drilling 3 wells. Two of the wells have so far found hydrocarbons, and 2 hydrocarbon systems have been documen ...
... have acquired substantial additional databases including 2D and 3D seismic, gravity, magnetic, EM surveys and seep surveys, and Cairn Energy together with Nunaoil and Petronas are presently drilling 3 wells. Two of the wells have so far found hydrocarbons, and 2 hydrocarbon systems have been documen ...
Earthquake Locations/Terminology Elastic Rebound Theory Seismic
... Earthquake Locations/Terminology Elastic Rebound Theory Seismic Waves Measuring Earthquakes ...
... Earthquake Locations/Terminology Elastic Rebound Theory Seismic Waves Measuring Earthquakes ...
Powerpoint Presentation Physical Geology, 10/e
... epicenter) explained by refraction of waves encountering core-mantle boundary • S-wave shadow zone (≥103° from epicenter) suggests outer core is a liquid • Careful observations of P-wave refraction patterns indicate inner core is solid ...
... epicenter) explained by refraction of waves encountering core-mantle boundary • S-wave shadow zone (≥103° from epicenter) suggests outer core is a liquid • Careful observations of P-wave refraction patterns indicate inner core is solid ...
Accommodating sill-complex emplacement
... folds. However, the majority of previous studies have primarily focused on forced folds developed above spatially isolated sills, although it is apparent from field and seismic reflection data that the development of laterally extensive complexes of interconnected sills facilitates magma transport i ...
... folds. However, the majority of previous studies have primarily focused on forced folds developed above spatially isolated sills, although it is apparent from field and seismic reflection data that the development of laterally extensive complexes of interconnected sills facilitates magma transport i ...
DECivil - Departamento de Engenharia Civil, Arquitectura e
... therefore their energy spreads less than body waves (P and S). Therefore they tend to produce the highest accelerations at larger distances from the epicenter. ...
... therefore their energy spreads less than body waves (P and S). Therefore they tend to produce the highest accelerations at larger distances from the epicenter. ...
Section 19.2 and 19.3 – Seismometer, Seismograms, and Scales
... • Seismic waves change their paths and speed as they encounter boundaries between zones of different materials. • Using this information scientists have discovered the thickness and composition of the Earth’s regions: – Upper mantle is perdotite – Outer core mostly liquid iron and nickel – Inner cor ...
... • Seismic waves change their paths and speed as they encounter boundaries between zones of different materials. • Using this information scientists have discovered the thickness and composition of the Earth’s regions: – Upper mantle is perdotite – Outer core mostly liquid iron and nickel – Inner cor ...
pdf 4.5Mb
... – rock layers of different density » boundary reflects energy like a mirror » time since earthquake gives depth to boundary ...
... – rock layers of different density » boundary reflects energy like a mirror » time since earthquake gives depth to boundary ...
Performances of the RSNI
... wave velocities (km s-1) obtained using the automatic pickings and the manual ones, shows that the 95 % of the differences are less than 0.5 km s-1. The same analysis in terms of VP/VS ratio shows that the 95 % of the differences are less than 0.08. Moreover, the greater differences are confined at ...
... wave velocities (km s-1) obtained using the automatic pickings and the manual ones, shows that the 95 % of the differences are less than 0.5 km s-1. The same analysis in terms of VP/VS ratio shows that the 95 % of the differences are less than 0.08. Moreover, the greater differences are confined at ...
Crustal Structure across the lateral edge of the Southern Tyrrhenian
... interfaces and the anisotropic parameters have been quantified using the Neighbourhood Algorithm (Sambridge, 1999). Preliminary results highlight: (1) a neat differentiation of the isotropic S-‐wave vel ...
... interfaces and the anisotropic parameters have been quantified using the Neighbourhood Algorithm (Sambridge, 1999). Preliminary results highlight: (1) a neat differentiation of the isotropic S-‐wave vel ...
HOTSPOTS
... Studying Earth’s Interior We know the structure of Earth’s interior from studying the P & S WAVES of earthquakes P-WAVES can travel through any material, but they bend when moving through liquid. This bending creates “SHAWDOW ZONE” S-WAVES can only travel through solids, so they create a much ...
... Studying Earth’s Interior We know the structure of Earth’s interior from studying the P & S WAVES of earthquakes P-WAVES can travel through any material, but they bend when moving through liquid. This bending creates “SHAWDOW ZONE” S-WAVES can only travel through solids, so they create a much ...
I have known Dr Yoshinori Takano on the occasion of IODP
... tool for hydrocarbon reservoir monitoring. This is because it enables an understanding of the reservoir response to hydrocarbon production and/or fluid injection in oil and gas fields. Time-lapse imaging is also a tool for environmental monitoring (e.g., Carbon dioxide sequestration monitoring). As ...
... tool for hydrocarbon reservoir monitoring. This is because it enables an understanding of the reservoir response to hydrocarbon production and/or fluid injection in oil and gas fields. Time-lapse imaging is also a tool for environmental monitoring (e.g., Carbon dioxide sequestration monitoring). As ...
CEUS Eq Overview
... We do not understand the causal mechanisms for CEUS intraplate earthquake activity. • Plate boundary mechanisms may not apply – Unlike plate boundary regions where the rate and size of seismic activity is directly correlated with plate interaction, seismic activity in the CEUS is probably related to ...
... We do not understand the causal mechanisms for CEUS intraplate earthquake activity. • Plate boundary mechanisms may not apply – Unlike plate boundary regions where the rate and size of seismic activity is directly correlated with plate interaction, seismic activity in the CEUS is probably related to ...
A study of Multiscale Seismic Data Joint Inversion method
... inversion equation (Danping et al., 2009). Although he adopted the modified Cauchy prior information as constraint of reflectivity, he only showed the superiority of this prior distribution theoretically, without proving whether this distribution conforms to real seismic data or not. In this paper, ...
... inversion equation (Danping et al., 2009). Although he adopted the modified Cauchy prior information as constraint of reflectivity, he only showed the superiority of this prior distribution theoretically, without proving whether this distribution conforms to real seismic data or not. In this paper, ...