Active Volcano Monitored with Spectra Geospatial SP85 GNSS Receivers

Le Tampon, La Réunion (March 2021) – Piton de la Fournaise (Peak of the Furnace), one of the world’s most active volcanoes, rises from La Réunion, a French department island off the coast of Madagascar.  To improve safety for the island’s almost nine hundred thousand residents as well as Indian Ocean rim communities and to conduct scientific volcanology research, the Piton de La Fournaise Volcanological Observatory (OVPF) is charged with monitoring the volcano’s activity.

OVPF’s post-eruption monitoring includes quickly characterizing, within two days, the resulting large-scale spatial deformation that has just occurred.  Following each eruption, which average two per year, two teams from OVPF, each equipped with a Spectra Geospatial SP85 GNSS receiver and a MobileMapper 50 data collector, are deployed to 79 established locations.  At each location, marked by a steel rod embedded in the lava, the teams take fast static measurements. Using three minute, one-second sampling, 4-cm vertical and 2-cm horizontal accuracies are achieved.  These results are integrated with data from 24 separately equipped permanent stations to model the magma’s path. “The aim of these observations is to improve our understanding of the magma plumbing system to better anticipate eruptions,” said Aline Peltier, OVPF volcanologist and geophysicist.

Topo-Mat, a Spectra Geospatial dealer with an established presence on Réunion for more than five years, worked with OVPF to choose the most appropriate instrument for the field survey teams. The SP85 meets all the requirements for work in the volcano’s challenging environment. It is compact, light-in-weight, easy to use, and its all-day battery life through hot swappable batteries allows for an uninterrupted workday. The SP85 is used in combination with the Spectra Geospatial MobileMapper 50, an Android 6 GIS data collector that offers state of the art smartphone capabilities.  OVFP uses Spectra Geospatial Survey Office software for fast, easy post-processing to enable survey results to be quickly completed.

About Piton de la Fournaise Volcanological Observatory
The Piton de La Fournaise Volcanological Observatory is a station of the Institut de Physique du Globe de Paris, which is a French governmental, non-profit research and higher education organization headquartered in Paris, dedicated to the study of earth and planetary sciences.

About SP85 GNSS Receiver
The SP85 is the newest Spectra Geospatial GNSS receiver.  It combines decades of GNSS RTK technology with new GNSS processing. It features a 600-channel 7G chipset with patented Z-Blade technology optimized for tracking and processing signals from all GNSS constellations even in difficult environments. Its unmatched connectivity delivers a unique combination of integrated 3.5G cellular, L-band satellite capable GNSS antenna, WiFi and UHF communications with SMS, email and anti-theft technology.

About Spectra Geospatial
Spectra Geospatial is an established brand known for delivering quality products to the survey, GIS and construction markets. Focusing on the specific needs of the conventional surveying market, the Spectra Geospatial brand offers a complete product portfolio, including Global Navigation Satellite Systems (GNSS), optical total stations, data collection hardware, field and office software, as well as a wide range of construction tools.  Spectra Geospatial surveying equipment is an economical choice that utilizes advanced technologies for optimal efficiency. With convenience and reliability as the foundation of the Spectra Geospatial brand, it is an ideal choice for value. The Spectra Geospatial brand is backed with the strong technical support that users have come to expect from a quality name in surveying and construction.