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WORLD  ORGANIZATION  OF  VOLCANO  OBSERVATORIES

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1502, 1503, Instituto Geofísico - Escuela Politécnica Nacional
Casilla 17-01-2759
Quito -Ecuador

Telephone :

(593)2- 2225655, -2225627

Telefax :

(593)2-2567847

Director:

Hugo Yepes, M.Sc  - hyepes@igepn.edu.ec

Email :

geofisico@igepn.edu.ec

Website :

http://www.igepn.edu.ec/

Staff:

Seismology

 Volcanology 

Electronics

·        Hugo Yepes

·        Mario Ruiz

·        Alexandra Alvarado

·        Mónica Segovia

·       Patricio Ramón    

·        José Egred - Historic Seismology

·       Pablo Samaniego

·       Minard Hall

·       Patricia Mothes

·        Daniel Andrade   

·        Andrés Ruiz   

·       Diego Barba

·       David Rivero

·        Wilson Enríquez

·        Vinicio Cáceres

·        Richard Jaramillo

·        Mayra Vaca  

·        Christian Cisneros  

·        Omar Marcillo  

·        Eddy Pinajota            

·        Etewaldo Jua      

       

Volcanic  Seismology

Computation

Secretary

·        Alexander García   

·        Indira Molina    

·       Guillermo Viracucha 

·        Liliana Troncoso

·        Jorge Aguilar 

·        Marisol León

·        Edwin Peralta 

 

·        Marcela de Robalino

·       Sandra Jiménez

·       M. Gabriela Jácome

 

Messengers

·        Carlos Ayol

·       Servilio Riofrio

 

 Scientists that collaborate with the Instituto Geofisico:

·        Bernardo Beate – Volcanology

·        Arturo Egüez – Neotectonics

·       Jean Philippe Eissen -- Volcanology (IRD)

·       Jean Luc LePennec --  Volcanology  (IRD)

·        Hiro Kumagai (JICA)  -- Volcanic Seismology

·        Franz  Boker (BGR) --- Thermal Images

 

MONITORING SYSTEMS,  VOLCANIC HAZARD MAPS, AND VOLCANIC STUDIES

1)      COTOPAXI   Volcano

  • 4 short period vertical seismic stations with telemetry, installed in 1977 (1) and 1987-88 (3)
  • 2 short period, 3 component seismic stations installed in 2001, 2002
  • a temporary seismic array with 8 telemetered and 11 portable seismic stations (1 or 3 components) was installed in 1996 by ORSTOM (now IRD) for a 6-8 months seismic survey telemetered
  • 2 telemetered tiltmeter stations installed in 1977 (NASA), 3 others in 1988, and 2 others in 2001 with VDAP
  • 3 dry tilt stations installed in 1975  and 3 others in 1987

·        17 EDM baselines established in 1987 (10 with VDAP), and 7 since 1991.

·        11 telemetered AFM lahars detectors (2002 with VDAP/USGS).

·        4 bench marks for GPS established (VDAP, 1993). Reoccupied in 1996 (IRD)  and 2004/05.

·        4 telemetered GPS stations, 2L1,  2 L1/L2  in 2005

·        periodic COSPEC measurements

·        Detailed tephrochronological studies, geologic mapping, chemical studies in progress.

·        Petrologic and chemical studies (Garrison, 2004)

·        Maps of potential volcanic hazards 1:50,000 (1988), updated from 1:100,000 map of 1978. New north and south sheets in 2004 (1:50,000).

·        Maps of volcanic risks (social-economic impact), 1:50,000 and 1:25,000 (1988).

·        Probable eruption scenarios: 1989, 2004.

·        Detailed lahar mapping and modeling: North and South drainages (2004).

·        1 broad band seismic station, since 2001.

·        Insar interferometry - 2004

·        Thermal Imagery

·        Video Camera – Telemetered:  View of summit area

·        Measurement of  % glacier cover: 1977, 2004

·        Periodic chemical analyses of  hot spring waters

 

2)      GUAGUA PICHINCHA Volcano

  • 1 short period vertical seismic station installed in 1981
  • 6 short period vertical seismic stations with telemetry installed in 1988-1993 (3 temporarily)
  • 2 short period vertical 3 components stations installed in 1997, 2000
  •  WWSSN station with 3 short period and 3 long period seismographs installed in 1989
  • 9 dry tilt stations established in 1981 and 1987 (with VDAP)
  • 14 EDM baselines installed on E and SE sides and inside caldera (1987-88 with VDAP);  on  W and N sides in 1998.
  • 3 telemetered tiltmeter stations  in 1988
  • Fumaroles and hot springs geochemistry and COSPEC analyses (1998à)

·       GPS campaigns 1999 and 

·       Detailed tephrochronologic, geologic mapping, petrologic, and geochemical studies.

·        Map of potential volcanic hazards; 1:50,000 (1988), updates 1981 hazards map.  New version in 1999.

·       Probable eruption scenarios: 1990, 1999.

·       Thermal Imagery (2004) 

3)     TUNGURAHUA Volcano

  • Two station telemetered permanent DOAS SO2 monitoring on W side
  • 8 short period vertical seismographs with telemetry installed in 1988, 1992, 1999
  • 1 telemetered, short period, 3 component seismograph in 2000
  • hot springs chemistry
  • 11 EDM baselines established in 1990 and 1991; others in 1999-2000.
  • 2 telemetered electronic tiltmeters installed in early 1992
  • 4 bench marks for GPS established by USGS/VDAP (1993)
  • 1 electronic telemetered rain gauge
  • 1 telemetered broad band seismograph  (2003)
  • SO2 monitoring by COSPEC
  • 2 lahar-detection stations (AFM); telemetered, (2000)
  • Detailed tephrochronologic, petrographic, and geochemical studies.
  • Map of potential volcanic hazards: 1:50,000 (1988), new version in 2002
  • Probable eruption scenarios: 1991, 1999, 2003.

·       Regular ash collection, monitoring, and chemistry

·       Thermal Imagery

·       Continual visual observations by Observatory and 10 trained local inhabitants with radio communication

·       Permanent Tungurahua Volcano Observatory at Guadalupe, 14 km from crater

4)  QUILOTOA Volcano
  • 1 short period vertical seismic station with telemetry installed in 1989
  • Detailed tephrochronological, geologic mapping, chemical studies
  • Occasional sampling of lake waters to monitor concentrations of CO2
  • Map of potential volcanic hazards (1:50,000) published in 1991
  • Thermal imagery

5) CUICOCHA Volcano
  • 1 short period vertical seismic station with telemetry installed in 1988
  • 11 EDM baselines established in 1988 and 1989-90
  • Detailed tephrochronological, mapping, chemical studies (1989)
  • Occasional sampling of deep lake waters to monitor concentrations of CO2
  • Occasional sampling and analyses of gases  emitted by lake
  • Map of potential volcanic hazards (1:50,000) published in 1988
  • Brief evaluation of physical impact of lake breakout on nearby towns
  • Thermal imagery
  • IRIS broad band seismic station (OTAV) installed 15 km to W (2000)

6)   CHIMBORAZO Volcano
  • Map of potential volcanic hazards, 1:50,000 published in 1990
  • Detailed tephrochronological studies; INECEL (1989); IGEPN Thesis (2005)
  • Reconnaissance petrographic and geochemical studies: 1980-1989, IGEPN Thesis
  • 1 short period, vertical telemetered seismic station:  1989-2002
  • Thermal imagery
  • Glacier and ice stratigraphy studies

7)    ANTISANA  Volcano

  • 1 short period vertical seismic station with telemetry installed in 1991
  • Detailed tephrochronologic, geologic mapping, chemical studies
  • Map of potential volcanic hazards: 1:50,000 (1989)
  • Thermal imagery
  • Glacier and ice stratigraphy studies

8)    EL REVENTADOR  Volcano

  • 4 short period vertical seismic stations with telemetry operated in 1991 to 1993 (INECEL)
  • Detailed tephrochronologic, petrographic, and geochemical studies: INECEL (1988),  IGEPN (2003-2005)
  • Map of potential volcanic hazards: INECEL (1988)
  • 4 short period vertical seismic stations with telemetry since 2002
  • 4 lahar-detection stations (AFM) operated in 2003
  • Thermal imagery
  • Occasional  SO2 monitoring with COSPEC

 

9)     IMBABURA Volcano

 

  • Geologic mapping (1:25,000), petrographic, and geochemical studies: IGEPN/IRD (2002-2005)
  • Map of potential volcanic hazards: 1:50,000 published in 1991, new version in 2005.
  • 3 broad band seismographs (to be installed in 2005)
  • IRIS broad band seismic station (OTAV) installed 25 km to NW (2000)

10)  PULULAHUA Volcano
  • Geologic mapping (1:25,000), petrographic, and geochemical studies: IGEPN/IRD (2002-2005)
  • Tephrochronologic studies: IGEPN  1987-1990
  • Map of potential volcanic hazards: 1:50,000 (1988)
  • Thermal imagery

 

11)  CAYAMBE Volcano

·        1 short period vertical seismograph with telemetry installed in 1988, 2 others in 2003;

      3 others are planned for installation in 2005.

·        1 short period vertical 3 component seismic station  in 2000

·        Detailed tephrochronologic, petrographic, and geochemical studies in 1998 and in progress

  • Map of potential volcanic hazards: 1:50,000 (2002)

·        Thermal imagery

·        2 EDM lines established in 1998

12)  MOJANDA Volcano
  • Tephrochronologic, petrographic, and geochemical studies: IGEPN/IRD in 1997-98

 13)  NINAHUILCA Volcano
  • Geologic map (1:25,000), petrologic, and chemical studies: 1992; others studies in progress.
  • Map of potential volcanic hazards: 1:50,000 (1992)
  • Thermal imagery

14)  CERRO NEGRO DE MAYASQUER Volcano
  • 1 short period vertical seismic station with telemetry installed in March 1992
  • reconnaissance geologic studies:  INGEOMINAS

15)  SOCHE Volcano
  • 1 short period vertical seismic station with telemetry installed in March 1993
  • Reconnaissance geologic and chemical studies: IGEPN/IRD 

16)  CALDERA CHALUPAS Volcano

 
  • Geological mapping and tephrochronological studies (INECEL, 1989)
  • Petrologic and chemical studies (Hammersley, 2003)
  • 1 short period vertical seismic station with telemetry installed in 1990

17)  SANGAY Volcano
  • Tephrochronologic, petrologic, geochemical studies: 1996-1999
  • Seismological and sound studies in progress (2003 - 2005)
  • Thermal Imagery

The IGEPN has many projects and investigations in progress with IRD, US Geological Survey, JICA, CANADA, Universities in Miami, North Carolina, New Hampshire, Idaho, North Michigan Technological, Penn State, among others.

Information updated  January  2005;

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