Results 81 to 90 of about 13,894 (221)

Seismic interferometry with antipodal station pairs [PDF]

Geophysical Research Letters, 2013
In this study, we analyze continuous data from all Global Seismographic Network stations between year 2000 and 2009 and demonstrate that several body wave phases (e.g., PP, PcPPKP, SKSP, and PPS) propagating between nearly antipodal station pairs can be clearly observed without array stacking using the noise/coda cross‐correlation method.
Lin, Fan-Chi, Tsai, Victor C.
openaire   +2 more sources

Spatio-temporal velocity variations observed during the pre-eruptive episode of La Palma 2021 eruption inferred from ambient noise interferometry

Scientific Reports, 2023
On Sept. 19th, 2021, a volcanic eruption began on the island of La Palma (Canary Islands, Spain). The pre-eruptive episode was characterized by seismicity and ground deformation that started only 9.5 days before the eruption.
Iván Cabrera-Pérez, Luca D’Auria, Jean Soubestre, Monika Przeor, José Barrancos, Rubén García-Hernández, Jesús M. Ibáñez, Ivan Koulakov, David Martínez van Dorth, Víctor Ortega, Germán D. Padilla, Takeshi Sagiya, Nemesio Pérez   +12 more
doaj   +1 more source

Revealing Blind Faults Through High‐Resolution Imaging of Shallow Structures: A Case Study on Chenghai Fault, Yunnan, China

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Blind faults pose significant seismic hazards because they remain hidden beneath the surface and are often unrecognized until they generate large earthquakes. High‐resolution shallow velocity models are essential for imaging these blind structures.
Lei Qin, Hongrui Qiu, Hongfeng Yang, Fenglin Niu, Nori Nakata, Xiong Xiong   +5 more
wiley   +1 more source

Surface rupture kinematics of the 2020 M_w 6.6 Masbate (Philippines) earthquake determined from optical and radar data [PDF]

Natural Hazards and Earth System Sciences
Optical correlation, interferometry, and field investigation of laterally offset features were undertaken to analyze the kinematics of the 2020 Mw 6.6 Masbate earthquake.
K. S. Sta. Rita, S. Valkaniotis, A. M. F. Lagmay, A. M. F. Lagmay   +3 more
doaj   +1 more source

Relation between seismicity and pre-earthquake electromagnetic emissions in terms of energy, information and entropy content [PDF]

Natural Hazards and Earth System Sciences, 2012
In this paper we show, in terms of Fisher information and approximate entropy, that the two strong impulsive kHz electromagnetic (EM) bursts recorded prior to the Athens earthquake (EQ) (7 September 1999, magnitude 5.9) present compatibility with the ...
S. M. Potirakis, G. Minadakis, K. Eftaxias   +2 more
doaj   +1 more source

Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms

, 2014
About 300 experiments have tried to determine the value of the Newtonian gravitational constant, G, so far, but large discrepancies in the results have made it impossible to know its value precisely.
A Bertoldi, A Louchet-Chauvet, A Peters, AD Cronin, C Antoine, CH Bagley, F Sorrentino, F Sorrentino, F Sorrentino, F. Sorrentino, G Amelino-Camelia, G Ferrari, G Lamporesi, G Lamporesi, G. M. Tino, G. Rosi, GG Luther, GM Tino, GM Tino, GT Foster, H Cavendish, HV Parks, J Hogan, J Luo, JB Fixler, JH Gundlach, JM McGuirk, L-C Tu, L. Cacciapuoti, M de Angelis, M Kasevich, M. Prevedelli, N Poli, O Karagioz, P Storey, PJ Mohr, S Dimopoulos, S Schlamminger, S Stellmer, S-Y Lan, T Quinn, T Quinn, TJ Quinn, TL Gustavson, TR Armstrong, Z-K Hu   +45 more
core   +1 more source

A Decadal Survey of the Near‐Surface Seismic Velocity Response to Hydrological Variations in Utah, United States

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract Ongoing climate change is leading to an increase in prolonged droughts and severe weather events, which are particularly pronounced in semi‐arid regions, such as the western United States. These extremes could have lasting social and environmental impacts.
Kuan‐Fu Feng, Marine Denolle, Fan‐Chi Lin, Tonie van Dam   +3 more
wiley   +1 more source

Three-dimensional supervirtual seismic refraction interferometry [PDF]

Arabian Journal of Geosciences, 2016
Improved supervirtual interferometry (SVI) method that enhance the signal-to-noise ratio (SNR) of noisy seismic refraction data is presented. This 3D supervirtual algorithm is helpful in removal of side lobes caused by convolution in the conventional 3D SVI method. In this study, we extend the supervirtual seismic refraction interferometry method to 3D
Paul Edigbue, Abdullatif Al-Shuhail
openaire   +1 more source

Accelerometer Data Transplant for Future Satellite Gravimetry

Earth and Space Science, Volume 13, Issue 1, January 2026.
Abstract Accurate monitoring of the Earth's gravity field is crucial for understanding mass redistribution processes related to climate change, hydrology, and geodynamics. The Gravity Recovery and Climate Experiment (GRACE) and its successor, GRACE Follow‐On (GRACE‐FO), have provided invaluable satellite gravimetry data through low‐low satellite‐to ...
Mohsen Romeshkani, Jürgen Müller, Sahar Ebadi, Annike Knabe, Manuel Schilling   +4 more
wiley   +1 more source

Effect of Land Cover Type on 3D Deformation Recovery From Synthetically Deformed High Resolution Satellite Optical Imagery

Earth and Space Science, Volume 13, Issue 1, January 2026.
Abstract The limits of detection for earthquake surface deformation in the spatial domain have improved with advances in remote sensing imagery data availability, resolution, and analysis. Sub‐pixel correlation and digital elevation model (DEM) differencing from sub‐meter, earthquake‐spanning satellite optical imagery has enhanced surface rupture ...
C. Hanagan, S. B. DeLong, N. G. Reitman
wiley   +1 more source