Andres Felipe Peña Castro

• Doctor of Philosophy
• PostDoc Position at University of New Mexico

We apply a machine learning (ML) earthquake detection technique on over 21 yr of seismic data from on‐continent temporary and long‐term networks to obtain the most complete catalog of seismicity in Antarctica to date. The new catalog contains 60,006 seismic events within the Antarctic continent for 1 January 2000–1 January 2021, with estimated mome...

Monitoring sea ice extent is critical to understand long‐term trends in climate change. Here, we show that ambient noise recorded by fiber‐optic sensing technology deployed in an Arctic shallow marine seafloor environment can track sea ice extent. We use a 37.4 km long section of fiber‐optic cable deployed offshore of Oliktok Point, Alaska. Data ar...

Plain Language Summary Seismologists use ground motion recordings of seismic waves (seismograms) to infer details about the earthquake rupture process. While large earthquakes often generate a physical imprint on the earth's surface through surface rupture, small earthquakes can often only be studied from seismograms. Nevertheless, small earthquake...

Plain Language Summary Seismicity linked to hydraulic fracturing (HF) in shale gas exploration in western Canada has increased drastically over the last decade. However, details of induced seismicity sequence evolution and triggering mechanism(s) remain unclear. In this study, we integrate local seismic monitoring and numerical stress modeling for...

The clustering behavior of injection-induced earthquakes is examined using one month of data recorded by the LArge-n Seismic Survey in Oklahoma (LASSO) array. The 1829-node seismic array was deployed in a 25 km×32 km area of active saltwater disposal in northern Oklahoma between 14 April and 10 May 2016. Injection rates in the study area are nearly...

Plain Language Summary The state of Oklahoma in the United States has experienced a large increase in the number of earthquakes over the last decade. Most of these earthquakes are thought to occur as a consequence of the long‐term effect of saltwater disposal, resulting from energy production, at depths of 1–2 km into geologic formations. In this s...

Recent earthquakes have demonstrated that rupture may propagate through geometrically complex networks of faults. Ancient exhumed faults have the potential to reveal the details of complex rupture at seismogenic depths. We present a new set of field observational criteria for determining which of a population of pseudotachylyte fault veins formed i...