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T3.1-P17 Network Monitoring Seismic and Volcanic OVSICORI-UNA COSTA RICA
H . Villalobos
1
Volcanological and Seismological Observatory of Costa Rica ( OVSICORI)
National University of Costa Rica.
Email : [email protected]
1
SUMMARY
The Volcanological and Seismological Observatory of Costa Rica,
National University (OVSICORI-UNA) is a University Research Institute
dedicated to research of volcanoes, earthquakes and other tectonic
processes, in order to find useful applications that help society to
mitigate the adverse effects of these events to economic and social
development.
In 1984, the OVSICORI-UNA initiates the operation of a seismographic
and volcanic network designed to monitor seismic and volcanic activity
throughout the national territory. Currently the seismographic and
volcanic network has a registration system analog and digital. The latter
enables online analysis of seismic and volcanic signals digitally, allowing
to expedite the analysis of signals and their interpretation using modern
computerized methods.
SEISMIC NEAR-REAL TIME MONITORING
VOLCANIC NEAR-REAL TIME MONITORING
,
Location
Station
Volcan Arenal
Volcan Miravalles
Volcan Turrialba – Crater Norte
Volcan Turrialba – Crater Este
Volcan Turrialba – Casa Guarda
Volcan Turrialba – Crater Central
Volcan Turrialba – Calle Vargas
Volcan Turrialba - Hacienda Retiro
Volcan Irazu Hacienda Retes
Volcan Irazu
Volcan Irazu
Volcan Poas - Crater
Volcan Poas – Terranova
Volcan Poas – Von Franzius
Volcan Rincon de la Vieja
Volcan Turrialba – Tiendilla
VAVL
VMAR
VTUN
VTCE
VTCG
VTUC
VTCV
VTRT
VIRE
VICA
HAYA
CRPO
VPTE
VPVF
VRLE
VTLA
Lat
10.437
10.813
10.023
10.025
10.015
10.024
9.9831
10.002
9.9668
9.9845
9.9801
10.195
10.172
10.205
10.788
10.002
Lon
Datalogger
Sismometer
NEAR - REAL TIME
-84.7091 TAURUS
TRILLIUM COMPACT
-85.1205 Q330HRS
TRILLIUM 240
-83.7635 TAURUS
TRILLIUM COMPACT
-83.7568 TAURUS
TRILLIUM COMPACT
-83.7586 TAURUS
TRILLIUM COMPACT
-83.762 TAURUS
TRILLIUM COMPACT
-83.7267 CMG – DM24S3EAM 3ESPC
-83.7945 TAURUS
TRILLIUM COMPACT
-83.8975 TAURUS
TRILLIUM COMPACT
-83.8446 CMG – DM24S3EAM 3ESPC
-83.8428 Webtronics – 16 bits Ranger – SS1
-84.2261 TAURUS
TRILLIUM COMPACT
-84.1985 CMG – DM24S3EAM 3ESPC
-84.2297 CMG – DM24S3EAM 3ESPC
-85.3652 CMG – DM24S3EAM 3ESPC
-83.7753 CMG – DM24S3EAM 3ESPC
Table 1. Station Volcanoes.
DATA ACQUISITION AND COMMUNICATION SYSTEMS
,
Type link
3G-ICE
3G-ICE
LAN-WIFI-OVSI
LAN-WIFI-OVSI
LAN-WIFI-OVSI
LAN-WIFI-OVSI
3G-ICE
3G-ICE
LAN-WIFI-OVSI
LAN-WIFI-OVSI
PTP-UHF-VHF
LAN-WIFI-OVSI
3G-ICE
LAN-WIFI-OVSI
3G-ICE
3G-ICE
Figure 3. Map of volcanic seismic stations
Volcanic seismology is performed through 15
broadband seismic stations located in the five
active volcanoes in Costa Rica.
Figure 4. Left represent number of daily
volcanic earthquakes recorded between June
and November , 2014 and right represent
number of volcanic-tectonic earthquakes
Figure 4. Turrialba volcano seismicity
associated with Turrialba Volcano between
October 29 , 2014 .
June 01th and November 01th , 2014.
Remote Monitoring of Volcanic Gases
Gas monitoring of SO2 in Turrialba
Volcano in near – real time , data
sending with 3G cellular network.
Figure 6 . Novac Software
2 Stations Type Minidoas with
Ocean Optics Spectrometer and
software
acquisition
system
NOVAC.
th
Figure 1. Map Seismic Network.
Figure 2. Seismicity September to October , 2012.
Figure 5 .Flow SO2 from
January to November 2014 .
Figure 14.SeiscomP3
Figure 13.Antelope
Automatic event
Nicoya Earthquake
September 05th , 2012 detection , location
OVSICORI-UNA uses a main
adquisition seismic data and postprocesing analysis Antelope real
time system. SeiscomP3 is used
for automatic location and sending
SMS messages and alerts using
social networks ( Facebook ,
Twitter , Web OVSICORI).
In the part of acquisition server , we
are
using
the
Virtualization
Technology with VMWARE and
NetApp data storage system. . High
availability is possible with a
redundant server arquitecture in Data
Center UNA and Data Center
OVSICORI. In this systems some
benefits fault tolerant , data recovery
and down time about 5 s . Two data
centers have a expanded storage
capacity to 100 TeraBytes each side.
The OVSICORI-UNA network of
data communications has been
implemented
a
wireless
broadband
network
a
free
frequency 2.4GHz and 5.8 GHz
with low cost equipment and high
rate of bandwidth ( 40 Mbps ) in
Turrialba , Irazu and Poas
volcanoes. In the last years we
have implemented the use of 3G
cellular networks to send data of
from all monitoring systems.
Figure 7. Picada Station
Volcanic Video Surveillance in Active Volcanoes Costa Rica
In the Figure 2 .Blue star represent 7.6 magnitude earthquake
September 05th , 2012 and the brown star represent 6.6 magnitude
earthquake October 23th , 2012 .
The seismic network consists of instruments short period and
broadband, around 34 stations broadband with digitizers Type:
Kinemetrics (Q330, Q330HR, Q330HRS), Nanometrics (TAURUS),
REFTEK 130, Güralp (EAM- CMG6TD) ; broadband seismometers Type:
CMG ( Güralp 6T - 3ESPC), Streckeisen (STS1-STS2) , Nanometrics
(Trillium240 - Compact) ; accelerometers Type : Kinemetrics FBA-EST
and REFTEK SMA-120. The analog seismic network short period is
about 6 stations with seismometers Type : Ranger SS1 and one digitizer
card in the center of seismic record. At present , there is a renewed the
analogue network by a digital broadband network in more than
95%,.The broadband network consists of strong motion and weak motion
and monitoring by permanent GPS stations.
Each station broadband also has a permanent GPS station, part of the
seismic monitoring network has around 25 permanent GPS stations
Type: Trimple NetRS, NETR9 with Zephir and Choke Ring antennas.
Figure 8. Eruption Poas Volcano
February 25th , 2014
Figure 9. Eruption Turrialba
Volcano
view
from
Irazu
Volcano May 04th , 2015
Figure 10. Eruption Turrialba
Volcano May 04th , 2015
The installation webcams in active volcanoes , we can observe in real time
eruptions of ash and ballistic . The web cam in our volcanoes use
technology light finder that reproduce images with level of light of 0.8 lux.
Figure 11. Network
GPS
Figure 12. Station
VTTL
GPS Permanent Network in near-real time
10 stations Trimble receiver NETRS – NETR9 and Zephir
Antenna . During the eruption of October 29th , 2014 . Figure
10 . Show the sites VTQU – VTNA – VTGP – VTCI and two
references sites ( AACR – CRCP ) they were used to reduce
displacement by tectonic movements. The results show a
rise of up to 1 cm in VTQU and VTPG points. In VTCI ,
VTNA and GIBE , the vertical movement is not significant .
In the horizontal and only VTCI and VTQU show significant
movement to the southwest , about 1 cm.
Figure 15.Virtualization Arquitecture
Figure 16.Data Communications Network OVSICORI
The data from International Data
Centre – CTBTO is forwarding in
Continuous Data Format ( CD1.1 ) to
NDC in OVSICORI-UNA . Our
systems acquisition of seismic data
( Antelope , Earthworm ,SeiscomP3)
receive data from international
stations around the world to get a
better location for local and regional
seismic events.
Fig 17. National Data Centre CTBTO –
OVSICORI/UNA.