Calibrated Earthquake Relocations from the TexNet Catalog (2017–2022) and Vertical Surface Deformation (2016–2022)

This repository contains the relocated earthquake catalog for the Southern Delaware Basin, as presented in the manuscript titled "Insights into Spatiotemporal Evolution of Induced Earthquakes in the Southern Delaware Basin Using Calibrated Relocations from the TexNet Catalog (2017-2022)".

Citations:

Asiye Aziz Zanjani, Heather R. DeShon, Vamshi Karanam, Alexandros Savvaidis; Insights into Temporal Evolution of Induced Earthquakes in the Southern Delaware Basin Using Calibrated Relocations from the TexNet Catalog (2017-2022) (2025). Earth and Space Science, 12 (6), e2024EA004027. https://doi.org/10.1029/2024EA004027

The earthquake relocations were conducted using the Hypocentroidal Decomposition technique with the open-source MLOC code, achieving enhanced spatial resolution for over 5,000 events from the TexNet catalog. The relocated catalog includes critical hypocentral parameters—latitude, longitude, depth—as well as origin time, associated uncertainties, and magnitude for each event.

This dataset is an essential resource for analyzing the spatiotemporal patterns of induced seismicity associated with anthropogenic activities, such as shallow fluid injection, in the Southern Delaware Basin following the operation of TexNet in 2017. It is suitable for use in seismic hazard assessments, modeling studies, and comparisons with other induced seismicity datasets. Additional data produced during this research includes vertical surface deformation measurements from 2016 through the end of 2022.

The repository also contains data referenced in the manuscript’s “Data Availability Statement” and “Open Research” sections. 

List of files attached to this repository:

• catalog.xls: Primary earthquake relocated catalog developed in this study
• 2016_2022_deformation.csv: Vertical displacement data (2016–2018) developed in this study
• 2019_2022_deformation.csv: Vertical displacement data (2016–2022) developed in this study
• post-2017-injection.xlsx: Injection data from the Railroad Commission of Texas (source)
• Hydrofracking-post2017.xlsx: Hydrofracking well data from FracFocus (source)
• GrowClust-common.xls: 2-D GrowClust catalog for supplemental information (source), https://doi.org/10.15781/76hj-ed46
• TexNet-Catalog: Initial TexNet catalog's origin and phase data, https://doi.org/10.7914/SN/TX