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Showing 1 to 8 of 8 for “"microtremor"”.
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Natural frequencies evaluation on existing reinforced concrete bridges using microtremor testing
… to be tested using simple dynamic test such as microtremor test in order to determine the natural frequencies of the bridges. Microtremor is also known as ambient vibration test. The test is a non-destructive test and easy to be conducted with less labor, time and cost. From the testing, …
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Refraction Microtremor Analysis of Areas Surrounding California State University San Bernardino
… ground motion. This study focuses on refraction microtremor analysis (ReMi) of the subsurface in Northern San Bernardino; more specifically, areas encompassing California State University San Bernardino, in close proximity to the San Andreas Fault. The technique will resolve shear wave velocity …
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Microtremor recordings in Northern Mississippi: Evaluating site effect and correlating with wave climate
… to prepare for the earthquake. In this research, microtremor recordings are used to evaluate the site effects. A total of 14 continuous long-term microtremor recordings (LTRs), each lasting at least 6 hours, at 8 selected locations in Mississippi (MS), Louisiana (LA) and Alabama (AL) states, and a …
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Seismic site characterization through joint modeling of complementary data functionals, with applications to Santo Domingo, Dominican Republic.
… wave dispersion, performed via refraction microtremor (ReMi). Fitting of data functionals by synthetics is driven by global optimization. The products of this approach are shear wave velocity profiles for the subsurface, accompanied by marginal posterior probability distributions (PPD) and …
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Site Response Characteristics of Compacted Gravel Fill in Iceland
… To fill this knowledge gap, over 500 hours of microtremor measurements were made at six study sites located throughout the Reykjavík, Iceland, capital region. Measurements recorded at various construction stages (e.g., the in-situ or pre-excavation, post-excavation, intermediate grades, and …
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Development of Data-driven Models to Predict Vs30 from mHVSR
This work investigates the potential of using microtremor horizontal-to-vertical spectral ratio (mHVSR) measurements to predict the time-averaged shear-wave velocity in the upper 30 meters (VS30) using data-driven models. We develop a dataset comprising 536 sites with 2,861 three-component ambient …
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Advanced analysis of complex seismic waveforms to characterize the subsurface Earth structure
… (2) Spatial Average Coherency (SPAC) analysis of microtremor to characterize the subsurface structure in urban areas, and (3) Surface wave dispersion inversion for shear wave velocity structure. Although these three projects apply different techniques and investigate different parts of the Earth, …
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Αστικό δίκτυο επιταχυνσιογράφων της Πάτρας (UPAN) : εγκατάσταση, ανάπτυξη βάσης δεδομένων και επεξεργασία καταγραφών
Το αντικείμενο της παρούσας Διδακτορικής Διατριβής ήταν η εγκατάσταση και λειτουργία ενός αστικού δικτύου επιταχυνσιογράφων (αστικό δίκτυο επιταχυνσιογράφων της Πάτρας, UPAN) στην παραθαλάσσια πόλη της Πάτρας (πληθυσμός: 160.400), καθώς και η επεξεργασία των σχετικών σεισμικών καταγραφών, με στόχο …