Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 74 for “"Seismic waves"”.
-
Learning Seismic Waves for Imaging the Earth
This thesis studies imaging Earth’s interior with seismic wavefields for seismic exploration and monitoring, and shows applications of deep learning in solving challenges in seismic imaging with either active or passive seismic data. For active data, we develop deep-learning methods to extrapolate …
-
Scattering of seismic waves by small inhomogeneities
Thesis. (Ph.D.) Massachusetts Institute of Technology. Dept. of Geology and Geophysics, 1955.
-
Enhanced backscattering of seismic waves from irregular interfaces
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1994.
-
Response of Simple Structural Systems to Traveling Seismic Waves
Made available in DSpace on 2014-12-13T19:31:59Z (GMT). No. of bitstreams: 1 8009114.pdf: 4494296 bytes, checksum: 0201a0b20a95cd753cd9980ac095a1ca (MD5) Previous issue date: 1979
-
Very large scale finite differences in modeling of seismic waves
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1995.
-
The attenuation of seismic waves in dry and saturated rocks
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1979.
-
Source, scattering and attenuation effects on high frequency seismic waves.
Thesis. 1976. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
-
Reflection of seismic waves at oblique angles from deep sea sediments
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1964.
-
The impact of high frequency/low energy seismic waves on unreinforced masonry
… This thesis argues that higher frequency waves travelling through stiff masonry structures can trigger two types of failure mechanisms that have not yet been taken into account. First, the high frequencies can cause small vertical inter-stone vibrations that result in irreversible relative …
-
Analysis and Application of Coal Seam Seismic Waves for detection of Abandoned Mines
… with disastrous results. The use of guided waves within coal seams can be utilized to locate voids, faults, and abrupt seam thickness changes. The use of seam waves for void detection and mine planning has tremendous value and use. To demonstrate the feasibility of abandoned mine void …
-
Structure and mechanics of the subducted Gorda plate: constrained by afterslip simulations and scattered seismic waves
… often occurs in the 10–50 km depth range, yet seismic imaging of the material properties in this region has proven difficult. This thesis focuses on developing methods to utilize high frequency (2–12 Hz) seismic waves scattered from the megathrust plate interface to constrain its fine-scale …
-
Structure and mechanics of the subducted Gorda Plate : constrained by afterslip simulations and scattered seismic waves
… often occurs in the 10-50 km depth range, yet seismic imaging of the material properties in this region has proven difficult. This thesis focuses on developing methods to utilize high frequency (2-12 Hz) seismic waves scattered from the megathrust plate interface to constrain its fine-scale …
-
Evidence for the Drainage of a Superglacial Lake as the Source of Seismic Waves Recorded at a Regional Distance
… supraglacial lake drainage can be accompanied by seismic activity, but little work has been done on the regional detection of such waves. The present study analyzes seismic data for the period coincident with the drainage of a supraglacial lake, an event that was documented by a team of …
-
The separation of source, path and site effects on high frequency seismic waves : an analysis using coda wave techniques
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1985.
-
Scattering of Seismic Waves from Arbitrary Viscoelastic-Isotropic and Anisotropic Structures with Applications to Data Modelling, FWI Sensitivities and Linearized AVO-AVAz Analysis
… radiation patterns induced by scattering of the seismic waves from inclusions in medium properties in an isotropic background. Most importantly, we investigate the effect of the inhomogeneity angle which is unique to viscoelastic waves, on these radiation patterns (scattering potentials) and also …
-
Adjustable Frequency Bandgap for Seismic Vibration Isolation of MRE-Based Metamaterial Foundations
… eventually damaging the superstructure. These seismic waves are more frequent in some areas because of their geological variations. The seismic vibration caused by earthquakes can damage the structure, leaving it unrectifiable and unusable. Different types of seismic isolation are used …
-
Improving seismic site response analysis for non-standard sites
… occur at the basis of a structure is how the seismic waves will be affected by travelling through soil deposits near the surface. In fact, these near-surface layers act as a filter modifying (amplify/de-amplify) the input motion and leading to modified ground motions at the ground surface. …
-
Seismic studies of 3-D elastic and anelastic structure of crust and upper mantle in Western China
… Indian-Eurasian continental collision. It is seismically very active even in some populous regions. Therefore, it is important to study the crustal and upper mantle structure beneath western China to understand the tectonics of the region and provide constraint for earthquake hazards. There …
-
ΣΕΙΣΜΙΚΗ ΣΥΜΠΕΡΙΦΟΡΑ ΜΟΝΟΒΑΘΜΙΩΝ ΣΥΣΤΗΜΑΤΩΝ ΣΕ ΕΠΑΦΗ
THE PRESENT INVESTIGATION CONCERNS THE SEISMIC RESPONSE OF ADJACENT BUILDINGS IN SERIES, HAVING SIMILAR OR DIFFERENT DYNAMIC CHARACTERISTICS, USING SINGLE-DEGREE-OF-FREEDOM (SDOF) SYSTEMS SUBJECTED TO A BASE MOTION. THE PHASE DIFFERENCE (DUE TO TRAVELLING SEISMIC WAVES) IN THE STARTING TIMES OF …
Page 1 of 4