Upper mantle and lithospheric heterogeneities in central
... Potsdam, Telegrafenberg, 14473 Potsdam, Germany. E-mail: [email protected] Universität Berlin, Germany ...
... Potsdam, Telegrafenberg, 14473 Potsdam, Germany. E-mail: [email protected] Universität Berlin, Germany ...
Continental crust under compression: A seismic refraction study of
... [11] Marine seismic data were acquired using an array of 20 air guns on board the R/V Maurice Ewing with a total capacity of 139 liter. The air guns were fired every 50 m on the offshore portions of the seismic transects (Figure 1). The two-way travel time to the acoustic basement is constrained usi ...
... [11] Marine seismic data were acquired using an array of 20 air guns on board the R/V Maurice Ewing with a total capacity of 139 liter. The air guns were fired every 50 m on the offshore portions of the seismic transects (Figure 1). The two-way travel time to the acoustic basement is constrained usi ...
Van Wijk, J.W., W.S. Baldridge, J. van Hunen, S
... find that the predicted maximum thermally induced, VS contrast between CP and BRP lithosphere is up to 14% in VS and up to 9% in VP and may be enhanced by another 1.5%–2% by lithospheric depletion (Fig. 2D; Fig. DR1). This range is similar in magnitude to that imaged (Sine et al., 2008). However, to ...
... find that the predicted maximum thermally induced, VS contrast between CP and BRP lithosphere is up to 14% in VS and up to 9% in VP and may be enhanced by another 1.5%–2% by lithospheric depletion (Fig. 2D; Fig. DR1). This range is similar in magnitude to that imaged (Sine et al., 2008). However, to ...
evidences of active faulting in thrace region (north
... most accurate approach of the expected displacements, the implementation of a detailed study is considered necessary for each fault, co-evaluating also the behavior of the geological material. ...
... most accurate approach of the expected displacements, the implementation of a detailed study is considered necessary for each fault, co-evaluating also the behavior of the geological material. ...
Document
... isostatic gravity field was removed from the gravity anomalies by assuming • an Airy-Heiskanen model for isostatic compensation of topographic loads (Simpson and others, 1983). On the basis of seismic refraction data, this model assumed a crustal density of 2.67 g/cm3, a normal crustal thickness at ...
... isostatic gravity field was removed from the gravity anomalies by assuming • an Airy-Heiskanen model for isostatic compensation of topographic loads (Simpson and others, 1983). On the basis of seismic refraction data, this model assumed a crustal density of 2.67 g/cm3, a normal crustal thickness at ...
Directional Variations in Travel-Time Residuals of Teleseismic P
... recognized that a discrepancy exists between azimuthal variations of teleseismic P-wave travel times and SKS wavesplitting results obtained for the subcontinental mantle. In central Europe, the fast SKS directions are close to the trend of the Hercynian fold belt (Bormann et al., 1993), whereas the ...
... recognized that a discrepancy exists between azimuthal variations of teleseismic P-wave travel times and SKS wavesplitting results obtained for the subcontinental mantle. In central Europe, the fast SKS directions are close to the trend of the Hercynian fold belt (Bormann et al., 1993), whereas the ...
SP-569 - GOCE, The Geoid and Oceanography
... The number of hot spots varies between ˜30 to 100, depending on the authors. For this study here, I used these hot spots which are supposed to be linked to deep rooted anomalies [1]. Mantle plumes have typical horizontal dimensions of less than 1000 km, though in some cases a relatively narrow long ...
... The number of hot spots varies between ˜30 to 100, depending on the authors. For this study here, I used these hot spots which are supposed to be linked to deep rooted anomalies [1]. Mantle plumes have typical horizontal dimensions of less than 1000 km, though in some cases a relatively narrow long ...
Temporal changes in seismic velocity of the crust around Iwate... as inferred from analyses of repeated active seismic experiment data
... found structure changes around micro-seismic zones (Matsushima et al., 2004). These previous studies indicate that temporal changes of the crustal structure are related with seismic/volcanic activities and plate motions. Iwate volcano, which is a strato volcano located in the middle of north eastern ...
... found structure changes around micro-seismic zones (Matsushima et al., 2004). These previous studies indicate that temporal changes of the crustal structure are related with seismic/volcanic activities and plate motions. Iwate volcano, which is a strato volcano located in the middle of north eastern ...
On Earth`s Mantle Constitution and Structure from Joint Analysis of
... geophysical methods based on seismic, geodetic, gravity, and electromagnetic sounding studies play prominent roles because of their ability to define structure on large scale lengths and depths based on measurements acquired from surface instrumentation. Global seismic tomography images, for example ...
... geophysical methods based on seismic, geodetic, gravity, and electromagnetic sounding studies play prominent roles because of their ability to define structure on large scale lengths and depths based on measurements acquired from surface instrumentation. Global seismic tomography images, for example ...
This document in RTF format
... In 1993 a large seafloor volcanic eruption occurred along the CoAxial segment of the JdF, immediately to the north of Axial Volcano. This eruption was detected during its early stages by SOSUS observations (Fox et al., 1995), and subsequently studied intensively (e.g. special section in January 15, ...
... In 1993 a large seafloor volcanic eruption occurred along the CoAxial segment of the JdF, immediately to the north of Axial Volcano. This eruption was detected during its early stages by SOSUS observations (Fox et al., 1995), and subsequently studied intensively (e.g. special section in January 15, ...
Low-Frequency Electromagnetic Energy Harvesting
... I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ...
... I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ...
Essentials of Oceanography, 11e (Trujillo) Chapter 1 Introduction to
... Match the term or person with the appropriate phrase. You may use each answer once, more than once or not at all. A) first European explorer to see the Pacific Ocean B) led voyage that first circumnavigated the globe C) used ecological approach to solve fisheries problem D) mapped world with Roman k ...
... Match the term or person with the appropriate phrase. You may use each answer once, more than once or not at all. A) first European explorer to see the Pacific Ocean B) led voyage that first circumnavigated the globe C) used ecological approach to solve fisheries problem D) mapped world with Roman k ...
Coda Q for the Sri Lankan Precambrian crust
... modifications mainly due to having higher attenuation rates at the uppermost part in comparison to that in mid and in deeper parts. The above discussed types of wave attenuation are generally case sensitive, i.e., the dominance of a particular type would be controlled by several other factors like s ...
... modifications mainly due to having higher attenuation rates at the uppermost part in comparison to that in mid and in deeper parts. The above discussed types of wave attenuation are generally case sensitive, i.e., the dominance of a particular type would be controlled by several other factors like s ...
Inconsistent correlation of seismic layer 2a and lava layer thickness
... layer15,19. The lava unit and transition zone are underlain by a sheeted dyke complex where the dykes predominantly dip away from the spreading centre where they were formed15,19. All units are variable in thickness, but thicknesses are greater at the BTF than at the HDR (Fig. 2). The average thickn ...
... layer15,19. The lava unit and transition zone are underlain by a sheeted dyke complex where the dykes predominantly dip away from the spreading centre where they were formed15,19. All units are variable in thickness, but thicknesses are greater at the BTF than at the HDR (Fig. 2). The average thickn ...
Effects of buoyancy and rotation on the polarity reversal frequency of
... & Kusano 2008), and mixing of axisymmetric magnetic flux bundles of opposite polarity (Olson et al. 2009). In addition to physical causes, statistical models have been developed to account for the reversal timescales (Hulot & Gallet 2003; Jonkers 2003; Ryan & Sarson 2007), but do not address the lon ...
... & Kusano 2008), and mixing of axisymmetric magnetic flux bundles of opposite polarity (Olson et al. 2009). In addition to physical causes, statistical models have been developed to account for the reversal timescales (Hulot & Gallet 2003; Jonkers 2003; Ryan & Sarson 2007), but do not address the lon ...
Thermal and chemical structure at the bottom of the lower mantle
... previous measurements (15, 16) of the solidus the solidus temperature at this pressure ...
... previous measurements (15, 16) of the solidus the solidus temperature at this pressure ...
Research and Development of Seismic Base Isolation Technique
... design for buildings. But the performances of the internal ductile structures during major earthquakes have proved to be unsatisfactory and indeed far below expectation. To enhance structural safety against severe earthquakes, more effective and reliable techniques for aseismic design of structures ...
... design for buildings. But the performances of the internal ductile structures during major earthquakes have proved to be unsatisfactory and indeed far below expectation. To enhance structural safety against severe earthquakes, more effective and reliable techniques for aseismic design of structures ...
High resolution tsunami inversion for 2010 Chile earthquake
... In addition to utilizing the conventional least-square inversion, this paper also enhances the inversion resolution by Grid-Shifting method. A smooth constraint is adopted to gain stability. After a series of validation and performance tests, SUTIM is used to study the 2010 Chile earthquake. Based u ...
... In addition to utilizing the conventional least-square inversion, this paper also enhances the inversion resolution by Grid-Shifting method. A smooth constraint is adopted to gain stability. After a series of validation and performance tests, SUTIM is used to study the 2010 Chile earthquake. Based u ...
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.