Τhe 10 new low-cost seismic stations in the CRL NFO area. The extent of the main map is marked with a green rectangle in the inset map of Greece and surrounding areas.
April 15, 2026 0 Comments

Installation of 10 low-cost seismic stations
in the CRL NFO area

In the framework of WP4 of the TRANSFORM2 Project, one of the goals is to improve the Earthquake Early Warning (EEW) readiness of the Corinth Rift Laboratory (CRL) Near-Fault Observatory (NFO). Following preliminary feasibility tests, the National and Kapodistrian University of Athens (NKUA) team, in collaboration with colleagues from the University of Patras (UPAT), installed 10 new low-cost seismic stations in the CRL NFO area to densify the network, in order to enable EEW. The locations of the new stations (WGC0-WGC9) are presented in Figure 1.
Τhe 10 new low-cost seismic stations in the CRL NFO area. The extent of the main map is marked with a green rectangle in the inset map of Greece and surrounding areas.
Figure 1: Τhe 10 new low-cost seismic stations in the CRL NFO area. The extent of the main map is marked with a green rectangle in the inset map of Greece and surrounding areas.
The addition of these stations improves the performance of network-based EEW algorithms by complementing the existing seismological infrastructure in the CRL NFO area (Figure 2). Simulations using the enhanced network indicate a modest increase in the average lead times (i.e., the time between the issuance of the first alert and the arrival of strong seismic waves) for selected target sites such as Patras, Aigion and Nafpaktos. This, in turn, results in a reduction of the blind zone, i.e. the minimum epicentral distance for which EEW becomes feasible, by a few km. Location accuracy also benefits from the denser network, as the azimuthal gap is reduced. Overall, the densification of the network, combined with the application of novel EEW algorithms, is expected to provide a step towards operational EEW in the area of the CRL NFO.
Figure 2. Spatial distribution of the epicentral distance to the nearest station in the CRL NFO, (a) with the previously available network, (b) with the network at full capacity, including the 10 newly added low-cost stations.
Figure 2. Spatial distribution of the epicentral distance to the nearest station in the CRL NFO, (a) with the previously available network, (b) with the network at full capacity, including the 10 newly added low-cost stations.

Data from two of the new stations are shared with the partners of the Hellenic Unified Seismological Network (HUSN), while data from all 10 stations are available in real-time or upon request to partners of the TRANSFORM2 project.