A5091070703- Seismic Waves and Analysis
- Seismology and Earthquake Studies
- earthquake and tectonic studies
- Earthquake Detection and Analysis
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Geophysics and Gravity Measurements
- Lymphoma Diagnosis and Treatment
- Blood disorders and treatments
- Geomagnetism and Paleomagnetism Studies
- Marine and environmental studies
- Blood groups and transfusion
- Platelet Disorders and Treatments
- Chronic Lymphocytic Leukemia Research
- Immunodeficiency and Autoimmune Disorders
- Geological and Geophysical Studies
- Geophysical Methods and Applications
- Hydrocarbon exploration and reservoir analysis
- Geophysics and Sensor Technology
Sapporo Hokuyu Hospital
2021-2023
Tohoku University
2020-2021
University of Florence
2021
Graduate School USA
2015-2020
Abstract We present one of the first studies on source location determination for volcanic earthquakes and characterization subsurfaces using data from a distributed acoustic sensing (DAS) system. Using arrival time difference estimated well-correlated waveforms dense spatial distribution seismic amplitudes recorded along fiber-optic cable, we determine hypocenters at Azuma volcano, Japan. The sources are located shallow depth beneath active areas with range approximately 1 km. Spatial site...
Abstract We analyze seismic waves excited by small Strombolian explosions to understand the source process of volcanic explosions. deployed five broadband seismometers at only 100–300 m away from active craters Stromboli volcano, Italy. Moment tensor inversion entire signals in 0.05–0.2 Hz band locates a depth 170 and 150–200 west/southwest crater where acoustic are excited. Contrary, sources 0.2–0.5 0.5–1.0 bands almost explosion onset located close crater. show for first time that preceded...
<p>First DAS observation at Mt. Azuma, Japan was conducted in July 2019 using buried fiber optic cable along the road access to volcano. Azuma is an active volcano located Tohoku region. Different from non-volcanic regions, wavefields more complex due its topography and strong heterogeneities beneath volcanic edifice. The strength of scattering seismic waves small-scale velocity reported be than one order higher that To estimate heterogeneities, a dense network necessary. high...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Geophysical Research - Solid Earth. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Source process small repetitive explosions Stromboli volcano inferred from temporary very-near-field broadband seismic...