341120 - 341130
(was 1402-12, 1402-13)
Centro de Monitoreo Vulcanol????o y Sismol????o de Chiapas
Centro de Investigaci????n Gesti????e Riesgo y Cambio Climᴩco
Universidad de Ciencias y Artes de Chipas (UNICACH)
Libramiento Norte Pte. #1150
Col. Lajas Maciel., C.P. 29039
Tuxtla Guti鲲ez, Chiapas, Mexico

Staff:
Dra. Silvia Ramos Hernᮤez
Dr. Miguel Angel Alatorre Ibargüengoitia 
Lic. Juan L. Jon Selvas

Support Staff:
Arisai Velằuez Zaguilᮦnbsp;
Julio C鳡r G???? Ovando
Saúl Alexis G???? Vằuez 
Dorian Toledo Velằuez
Alejandro Oliva Macias
Orquidea Guadalupe Rodr????z
Maribel Gald᭥z

Collaborating Institutions:
Servicio Sismol????o Nacional e Instituto de Geof????a, Universidad Nacional Aut????a de M鸩co (UNAM, Mexico)
Centro Nacional de Prevenci????e Desastres (CENAPRED, Mexico)
Consejo Superior de Investigaciones Cient????as (Spain)
Observatorio Vulcanol????o de la Universidad de Colima (UCOL, Mexico)

Description:

The University of Sciences and Arts of Chiapas (Universidad de Ciencias y Artes de Chiapas, UNICACH) is in charge of the monitoring of El Chich????nd Tacanᠶolcanoes. In 2004 UNICACH signed a collaboration agreement for the seismic and volcanic monitoring for disaster prevention with the Secretary of Security and Civil Protection, the Subsecretary of Civil Protection of the Government of Chiapas and the National Center for Disaster Prevention (CENAPRED). As a result of this agreement, el Centro de Monitoreo Vulcanol????o y Sismol????o de Chiapas was created at UNICACH. Since then, all these institutions have collaborated to develop the monitoring network of El Chich????nd Tacanᠶolcanoes.

 El monitoreo del VolcᮠChich???? Tacanᬠes realizado en la Universidad de Ciencias y Artes de Chiapas (UNICACH). En el a????004 la UNICACH firm???? convenio de colaboraci????n materia de monitoreo volcᮩco y s????co para la prevenci????e desastres naturales con la Secretar????e Seguridad y Protecci????iudadana, la Subsecretaria de Protecci????ivil del Gobierno del Estado y el Centro Nacional de Prevenci????e Desastres, acuerdo que deriv???? la formaci????el Centro de Monitoreo Vulcanol????o-Sismol????o de Chiapas en la UNICACH. Desde entonces se han realizado esfuerzos de colaboraci????ntre estas instituciones para el fortalecimiento de la Red de Monitoreo de los Volcanes Chich???? Tacanᮼ/p>

El  Chich????olcano

Seismology
The seismic network at El Chich????bsp;volcano is composed by four telemetered broadband stations:

Viejo Volcᮠstation (VVCH)
Municipio: Chapultenango, Chiapas
Latitude: 17° 21' 53.50" N
Longitude: 93° 13' 23.40" O
Altitude: 1037m

Francisco Letation (FLCH)
Municipio: Francisco LeChiapas
Latitude: 17° 17´49.00" N
Longitude: 93° 17' 18.00" O
Altitude: 900 m

Nicapa station (NCCH)
Municipio: Pichucalco, Chiapas
Latitude: 17° 23´49.40" N
Longitude: 93° 13' 29.40" O
Altitude: 609 m

These broadband stations were installed in March 2012 and the signals are received in real time at Centro de Monitoreo Vulcanol????o y Sismol????o de Chiapas in Tuxtla Guti鲲ez, Chiapas.

Geochemistry
The geochemistry monitoring at El Chich????olcano has been conducted constantly and permanently. The Crater Lake is sampled three or four times per year including pH and temperature measurements. Chemical analyses in the laboratory are performed by atomic absorption spectrophotometry at the Geochemistry Laboratory of the Institute of Geophysics, UNAM and with ICP equipment at the Laboratory of Earth Sciences and Environment, UNICACH. Chemical analysis includes sulfates, chloride, fluoride, boron, carbonate, bicarbonate, calcium, magnesium, sodium and iron.

Others:
Telemetered IP camera.
GPS station at Viejo Volcᮠ(VVCH).
Meteorological station (rain gauge, temperature, humidity and atmospheric pressure).

Tacanᠶolcano

Seismology
The seismic network at Tacan᦮bsp;volcano is composed by four telemetered broadband stations:

Tapachula station (CHLP)
Municipio: Tapachula, Chiapas
Latitude: 17° 23´49.40" N
Longitude: 93° 13' 29.40" O
Altitude: 609 m

Chiquihuites station (CHPA)
Municipio: Chiquihuites, Chiapas
Latitude: 15° 5'35.49"N
Longitude: 92° 6'1.45"O
Altitude: 2,058 m

La Patria station (CHCH)
Municipio: Tapachula, Chiapas
Latitude: 15° 6'48.91"N
Longitude: 92°13'58.92"O
Altitude: 1,121 m

Pavencul station (CHCI)
Municipio: Pavencul, Chiapas
Latitude: 15°12'8.20"N
Longitude: 92°10'58.63" O
Altitude: 1,928 m

These broadband stations were installed in March 2012 replacing short-period stations and the signals are received in real time at Centro de Monitoreo Vulcanol????o y Sismol????o de Chiapas in Tuxtla Guti鲲ez, Chiapas.

 Others:
 Meteorological station (rain gauge, temperature, humidity and atmospheric pressure).