Dataset of integrated seismic and geodetic strain rates in the Kopeh Dagh Belt (NE Iran): Earthquake focal mechanisms (1969–2024) and GNSS-derived deformation parameters

Abstract

This data article describes a structured dataset of seismic and geodetic deformation parameters for the Kopeh Dagh Belt in northeastern Iran. The dataset integrates Global Navigation Satellite System (GNSS) velocity measurements from 16 stations with earthquake focal mechanism information covering the period 1969–2024. GNSS velocity components and associated uncertainties are provided in a Eurasia-fixed reference frame. Earthquake data include location, magnitude, focal depth, and nodal plane parameters (strike, dip, and rake), together with derived stress tensor quantities. The spatial framework is defined by a discretization of the region into 20 triangular subnetworks using Delaunay triangulation. For each subnetwork, geodetic strain components are calculated from GNSS velocity gradients, while seismic strain parameters are derived from moment tensor information. Additional variables include rotation rates obtained from the antisymmetric component of the velocity gradient tensor, as well as principal stress axes, stress ratios, and stress regime classifications obtained through inversion of focal mechanism data. All datasets are organized in a machine-readable format and include raw measurements, intermediate parameters, and derived quantities. The dataset is intended for reuse in tectonic analyses, numerical modeling of deformation fields, evaluation of strain partitioning, and comparison of seismic and geodetic deformation patterns in intraplate regions.