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 28 for “"Receiver functions."”.
-
Lithospheric Structure Across the Northern Canadian Cordillera from Teleseismic Receiver Functions
… tectonic setting of a region. Teleseismic P-wave receiver function techniques can provide estimates of the depth of the Moho and therefore crustal thickness under a broadband station. In this research we are interested in the structure of the crust and mantle across the northern Canadian …
-
Joint modeling receiver functions and autocorrelograms to estimate crustal structure in the presence of deep sediments.
P receiver functions use large, distant earthquakes to image local structure. They record the interactions of teleseismic P waves with impedance contrasts, such as the Moho and sediment-basement interface, which generate conversions of P type to S type energy. Typically, receiver functions are used …
-
A broad Iceland plume associated with two phase transitions at the 660 km discontinuity: Constraints from receiver functions
… wavespeed anomaly. Here we utilize a robust receiver-function-based technique to image the topography of the 410 and 660 km discontinuities bordering the mantle transition zone beneath Iceland and surrounding oceanic regions, and construct thermal and seismic wavespeed models of the upper …
-
Imaging Resolution of the 410-km and 660-km Discontinuities
… to thermal perturbations. Teleseismic P-to-S receiver functions have been widely used to map the depths of the two discontinuities. In this study, we investigate the resolution of receiver functions in imaging topographic variations of the 410-km and 660-km discontinuities based on wave …
-
Seismic studies of 3-D elastic and anelastic structure of crust and upper mantle in Western China
… from ambient noise and earthquakes, teleseismic receiver functions, and body-wave travel times, as well as joint inversions of these datasets utilizing neighborhood searching algorithm. We propose a generalized H-κ method with harmonic correction on receiver functions to provide a better …
-
Unveiling the lithospheric and mantle dynamic controls on Antarctic topography
… seismic lines in the Southern Ocean, and new receiver function analysis for 15 stations in the northern Transantarctic Mountains. A novel joint modelling approach, integrating high-frequency receiver functions and P-wave coda autocorrelation, is used to constrain ice and subglacial properties. …
-
Vertical Motions at the Fringes of the Icelandic Plume
… with the Icelandic plume is investigated using receiver function analysis. Teleseismic events recorded at nine temporary and 59 permanent broadband, three-component seismometer stations are used to calculate 3864 P-to-S crustal receiver functions. The amplitude and arrival time of particular …
-
Multipass communication systems for tiled processor architectures
… utilize multiple sets of parallel baseband receiver functions to balance communication data rates and available computation capabilities. This is achieved by spatially pipelining baseband functions across parallel resources to perform multiple processing passes on the same set of received …
-
Ps receiver function imaging of crustal structure and Moho topography beneath the Northeast Caribbean.
… of complex plate boundaries. We conduct P-to-S receiver function studies of the Northeast Caribbean in order to image the plate boundary and study the major forces driving tectonics and strain distribution in the region. To calculate a velocity model for migration, we implement a technique …
-
THE SEDIMENT AND CRUSTAL STRUCTURE OF THE SOUTHEASTERN UNITED STATES
… P-to-S converted waves, analyzed through the receiver function technique, enable detailed imaging of lithospheric structure, but suffer from contamination in sedimented regions. Therefore, I implement a method for constraining average crustal thickness and seismic velocities while correcting …
-
Seismicity and structure of the eastern Gawler Craton and Lake Eyre region
… sedimentary layers within South Australia using receiver functions. Three-quarters of the Australian continent is covered by a blanket of sedimentary and regolith material, and estimates of sedimentary thickness are essential as the next frontier for mineral exploration in Australia is …
-
Seismicity and structure of the eastern Gawler Craton and Lake Eyre region
… sedimentary layers within South Australia using receiver functions. Three-quarters of the Australian continent is covered by a blanket of sedimentary and regolith material, and estimates of sedimentary thickness are essential as the next frontier for mineral exploration in Australia is …
-
Receiver function study in northeast Tibet and adjacent boundaries
… plateau Seismic (NETS) project, we performed receiver functions analysis across the northeastern Tibetan plateau and adjacent boundaries. Using the data of about 500 events obtained from 61 broad-band stations, we provided a detailed image of the Moho geometry and constraints on the …
-
Crustal structure and evolution beneath the Colorado Plateau and the southern basin and range province
<p>"Stacking of about 15,500 P-to-S receiver functions recorded at 72 USArray and other broadband seismic stations placed on the Colorado Plateau and the SBRP in Arizona revealed systematic spatial variations in crustal Vp/Vs, crustal thickness and amplitude of P-to-S converted phases. Our results …
-
Receiver function imaging of mantle transition zone discontinuities beneath Alaska
… extent of the subducted slabs. We conducted a receiver function study to map the topography of the 410 km and the 660 km discontinuities beneath Alaska and its adjacent areas by taking advantage of the teleseismic data from the new USArray deployment in Alaska and northwestern Canada. Stacking …
-
Receiver function investigations of mantle transition zone and crustal structure in East Africa and Northeast Asia
… imaged by stacking an unprecedented volume of receiver functions (RFs). The normal MTZ thickness beneath the Western Branch of the EARS and Tanzania Craton indicates the absence of present-day thermal upwelling from the lower mantle. In contrast, beneath the Eastern Branch, a significant MTZ …
-
Der obere Mantel in der Eifel-Region untersucht mit der Receiver Function Methode
… Mitteleuropas ist. In dieser Arbeit wird die Receiver Function Methode verwendet, um die Strukturen des oberen Mantels zu untersuchen. 96 teleseismische Beben (mb > 5.2) wurden ausgewertet, welche von permanenten und mobilen breitbandigen und kurzperiodischen Stationen aufgezeichnet wurden. …
-
The X-discontinuity: Seismic signatures of a heterogeneous upper mantle
… exact cause of the X is yet to be determined. Receiver function (RF) techniques using P-to-S converted waves are capitalised upon to study the X at higher spatial resolution than previously attainable. Stacking RFs in the depth and time-slowness domains provides identification of the X beneath …
-
Seismic investigations of the northern Transantarctic Mountains
… results from previous studies based on S-wave receiver functions and tomography, confirming relatively thin crust beneath the northern TAMs. Upper mantle structure can also be assessed with seismic anisotropy. I performed shear wave splitting analyses on PKS, SKS, and SKKS phases to obtain the …
Page 1 of 2