{"id":69,"date":"2025-02-27T10:11:56","date_gmt":"2025-02-27T10:11:56","guid":{"rendered":"https:\/\/wovo.iavceivolcano.org\/members-observatories-directory\/observatorio-vulcanolo-y-sismolo-de-costa-rica\/"},"modified":"2025-02-27T10:11:59","modified_gmt":"2025-02-27T10:11:59","slug":"observatorio-vulcanolo-y-sismolo-de-costa-rica","status":"publish","type":"page","link":"https:\/\/wovo.iavceivolcano.org\/members-observatories-directory\/observatorio-vulcanolo-y-sismolo-de-costa-rica\/","title":{"rendered":"Observatorio Vulcanol????o y Sismol????o de Costa Rica"},"content":{"rendered":"

34510-345811
<\/span><\/b>(was 1405)
Observatorio Vulcanol????o y Sismol????o de Costa Rica<\/strong>
Universidad Nacional (OVSICORI-UNA)<\/strong>
Apartado Postal: 2346-3000<\/strong>
Heredia<\/strong>
Costa Rica<\/strong><\/span><\/p>\n

\n\n\n\n\n\n\n\n
Telephone :<\/span><\/b><\/i><\/td>\n(506) 261 0781; 261 0611<\/td>\n<\/tr>\n
Telefax :<\/span><\/b><\/i><\/td>\n(506) 261 0303<\/td>\n<\/tr>\n
Director:<\/b><\/i><\/span><\/td>\nMontero Cascante Carlos <\/td>\n<\/tr>\n
Email :<\/b><\/i><\/span><\/td>\nThis email address is being protected from spambots. You need JavaScript enabled to view it.<\/span><\/td>\n<\/tr>\n
Website :<\/p>\n

<\/b><\/i><\/span><\/td>\n

www.ovsicori.una.ac.cr<\/a>
<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Faculty and staff:<\/p>\n

\n

Ana Arquedas – Reception
Vilma Barboza – Volcanic seismology
Jorge Brenes – Geology-volcanic hazards
Zaida Campos – Receptionist
Elir Duarte – Volcanology
Erick Fern\u1ba4ez – Geochemistry
Victor Gonz\u1b25z – Seismology, computer
Frederico Guendel – Seismology
Enrique Hernandez – Geodesy, deformation
Eduardo Malavassi – Petrology, volcanic hazards, deformation
Tomas Marino – Geodesy, deformation
Maria Martinez – Geochemistry
Antonio Mata – Electronics
Ghisselle Monge – Secretary
Carlos Montero – Seismology
Jorge M. Protti – Seismology, tectonics
Daniel Rojas – Electronics
Rodrigo S\u196ez – Volcanology
Juan Segura – Seismology
Yadira Sol???? Administrative Assistant
Juan Valdez – Geochemistry
Rodolfo Van der Laat – Geodesy, deformation
Floribeth Vega – Data Analyst<\/p>\n<\/blockquote>\n

Observatorio Vulcanol????o y Sismol????o de Costa Rica, Universidad Nacional (OVSICORI-UNA) operates a seismographic telemetered network which consists of 25 stations covering all the country and transmitting continuously to the hearquarter at Heredia. The main purpose of the network is to study the seismotectonic setting and to monitor seismic activity associated with volcanoes.<\/p>\n

Hence, five of these stations are located close to active volcanoes : Rincon de la Vieja, Arenal, Po\u1cec Iraz\u00fa and Turrialba.<\/p>\n

Additionally thirteen portable seismographs are ready for impending situations of local microseismicity or volcano activity.<\/p>\n

The next table explains the monitoring routine techniques at each volcano, and it could be increased in the eventuality of abnormal activity.<\/p>\n

RINCON DE LA VIEJA VOLCAN<\/p>\n\n\n\n\n\n\n
Method<\/td>\nRecord periodicity<\/td>\n<\/tr>\n
A permanent seismic station<\/td>\nContinuous<\/td>\n<\/tr>\n
One triangle of dry tilt<\/td>\nEvery year<\/td>\n<\/tr>\n
Visual observation<\/td>\nTwice a year<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

ARENAL VOLCANO<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Method<\/strong><\/td>\nRecord periodicity<\/strong><\/td>\n<\/tr>\n
A permanent seismic station<\/td>\nContinuous<\/td>\n<\/tr>\n
3 deformation radial distances<\/td>\n8 weeks<\/td>\n<\/tr>\n
5 electronic tiltmeters<\/td>\n2 weeks<\/td>\n<\/tr>\n
6 triangles of dry tilt<\/td>\n10 weeks<\/td>\n<\/tr>\n
1 radial levelling line (1.6 km)<\/td>\n4 months<\/td>\n<\/tr>\n
Fumarolic temperature<\/td>\n8 weeks (when possible)<\/td>\n<\/tr>\n
6 H2<\/sub>O Geochemistry stations<\/td>\n2 weeks<\/td>\n<\/tr>\n
2 Sakurajima traps (KOH)<\/td>\n4 weeks<\/td>\n<\/tr>\n
Acid rain network (7 sta)<\/td>\n2 weeks<\/td>\n<\/tr>\n
Radon emanometry (6 sta)<\/td>\n2 weeks<\/td>\n<\/tr>\n
Visual observation<\/td>\n2 weeks<\/td>\n<\/tr>\n
2 continuous GPS stations<\/td>\nContinuous (daily positions)<\/td>\n<\/tr>\n
5 broad band stations<\/td>\nContinuous<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

PLATANAR VOLCANO<\/strong><\/p>\n\n\n\n\n
Method<\/strong><\/td>\nRecord periodicity<\/strong><\/td>\n<\/tr>\n
2 triangles of dry tilt<\/td>\nOnce a year<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

POAS VOLCANO<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Method<\/strong><\/td>\nRecord periodicity<\/strong><\/td>\n<\/tr>\n
One permanent seismic station<\/td>\nContinuous<\/td>\n<\/tr>\n
Trilateration network (0.72 km2<\/sup>)<\/td>\n8 weeks<\/td>\n<\/tr>\n
18 km radial levelling line<\/td>\n3 years<\/td>\n<\/tr>\n
5 triangles of dry tilt<\/td>\n10 weeks<\/td>\n<\/tr>\n
Fumarolic temperature<\/td>\n4 weeks<\/td>\n<\/tr>\n
Fumarolic condensates<\/td>\n4 weeks<\/td>\n<\/tr>\n
3 Sakurajima traps (KOH)<\/td>\n4 weeks<\/td>\n<\/tr>\n
Acid rain network (7 sta)<\/td>\n2 weeks<\/td>\n<\/tr>\n
Radon emanometry (9 sta)<\/td>\n2 weeks<\/td>\n<\/tr>\n
Visual observation<\/td>\n2 weeks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

IRAZU VOLCANO<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Method<\/td>\nRecord periodicity<\/td>\n<\/tr>\n
One permanent seismic station<\/td>\nContinuous<\/td>\n<\/tr>\n
Trilateration network (1 km2<\/sup>)<\/td>\n8 weeks<\/td>\n<\/tr>\n
Levelling line and occasional gravimetry survey<\/td>\n3 years<\/td>\n<\/tr>\n
6 triangles of dry tilt<\/td>\n10 weeks<\/td>\n<\/tr>\n
Fumarolic temperature<\/td>\nYearly<\/td>\n<\/tr>\n
Fumarolic condensates<\/td>\nYearly<\/td>\n<\/tr>\n
Radon emanometry (5 sta)<\/td>\n2 weeks<\/td>\n<\/tr>\n
Visual observation<\/td>\n2 weeks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

TURRIALBA VOLCANO<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Method<\/strong><\/td>\nRecord periodicity<\/strong><\/td>\n<\/tr>\n
One permanent seismic station<\/td>\nContinuous<\/td>\n<\/tr>\n
6 triangles of dry tilt<\/td>\n\n

10 weeks<\/p>\n<\/td>\n<\/tr>\n

Fumarolic temperature<\/td>\n8 weeks<\/td>\n<\/tr>\n
Fumarolic condensates<\/td>\n8 weeks<\/td>\n<\/tr>\n
1 Sakurajima trap (KOH)<\/td>\n4 weeks<\/td>\n<\/tr>\n
Acid rain network (3 sta)<\/td>\n2 weeks<\/td>\n<\/tr>\n
Radon emanometry (3 sta)<\/td>\n2 weeks<\/td>\n<\/tr>\n
Visual observation<\/td>\n2 weeks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

INSTRUMENTATION<\/p>\n

Seismology<\/strong><\/p>\n

25 telemetered seismographic stations. Each equipment consists of a Ranger SS-1 vertical seismometer, 1 Hz preamplifier and oscillator controller, VHF or UHF radio link and solar panel. The signal is recorded at the Observatory on thermal paper. Digital recording system started in Dec 91.<\/p>\n

1 station has one ow gain horizontal component (Wood Anderson Type).<\/p>\n

13 Portable MEQ 800 seismic stations.<\/p>\n

Deformation<\/strong><\/p>\n

Automatic level NaK2, Wild<\/p>\n

Automatic level AL2, Pentax<\/p>\n

4 tripod<\/p>\n

Theodolite T2000, Wild (UCSC)<\/p>\n

EDM DI 3000, Wild (UCSC)<\/p>\n

2 GPS antennas, receivers (UCSC)<\/p>\n

5 broad band seismometers (Streckeison) (UCSC)<\/p>\n

Geochemistry<\/strong><\/p>\n

Thermometer, Thermocouples<\/p>\n

Gas and water sampling devices and pipes<\/p>\n

6 Sakurajima traps for sampling acid gases<\/p>\n

23 double check radon stations<\/p>\n

17 acid rain (field stations)<\/p>\n

1 specific ton analizer<\/p>\n

1 spectrophotometer<\/p>\n

1 analytic balance<\/p>\n

1 distillator<\/p>\n

2 soil ovens<\/p>\n

gas chromatograph<\/p>\n

Fon chromatograph<\/p>\n

AA instrument (6\/93)<\/p>\n

Petrography<\/strong><\/p>\n

3 rock saws (for thin sections)<\/p>\n

3 polishing machines (thin sections)<\/p>\n

3 petrographic microscopes<\/p>\n","protected":false},"excerpt":{"rendered":"

34510-345811(was 1405)Observatorio Vulcanol????o y Sismol????o de Costa RicaUniversidad Nacional (OVSICORI-UNA)Apartado Postal: 2346-3000HerediaCosta Rica Telephone : (506) 261 0781; 261 0611 Telefax : (506) 261 0303 Director: Montero Cascante Carlos  Email : This email address is being protected from spambots. You…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":23,"menu_order":0,"ping_status":"open","template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","footnotes":""},"class_list":["post-69","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/wovo.iavceivolcano.org\/api\/wp\/v2\/pages\/69","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wovo.iavceivolcano.org\/api\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wovo.iavceivolcano.org\/api\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wovo.iavceivolcano.org\/api\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/wovo.iavceivolcano.org\/api\/wp\/v2\/pages\/69\/revisions"}],"predecessor-version":[{"id":151,"href":"https:\/\/wovo.iavceivolcano.org\/api\/wp\/v2\/pages\/69\/revisions\/151"}],"up":[{"embeddable":true,"href":"https:\/\/wovo.iavceivolcano.org\/api\/wp\/v2\/pages\/23"}],"wp:attachment":[{"href":"https:\/\/wovo.iavceivolcano.org\/api\/wp\/v2\/media?parent=69"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}