Present Status of the LISN Magnetometer
Operation
and new Developments
by
Oscar A. Veliz, Ricardo Rojas, Jorge L. Chau
Instituto Geofisico del Peru
Radio Observatorio de Jicamarca
Second LISN Workshop, San Jose Dos Campos, Nov 07-11, 2011
LOW LATITUDE IONOSPHERIC
SENSOR MAGNETOMETERS NETWORK
Outline
• Network Deployement and Installation
• LISN Magnetometers description
• Magnetometer Operational Status
• Preliminary Results
• New developments and Conclusions
Second LISN Workshop, San Jose Dos Campos, Nov 07-11, 2011
LOW LATITUDE IONOSPHERIC SENSOR
MAGNETOMETERS NETWORK
Outline
• We describe here the present status of the LISN
magnetometer network operation and data collection.
• Five triaxial magnetometers were deployed and installed
since 2007 at Leticia-Colombia (2009), Puerto MadonadoPeru(2007), El Leoncito-Argentina (2008), Cuiba-Brasil
(2010), Alta Floresta-Brasil (2010)
• New magnetometers developments and improvements
plans for upgrading the existing IGP and LISN
magnetometers
LOW LATITUDE IONOSPHERIC SENSOR
MAGNETOMETERS NETWORK
Leticia
(-4.19 -69.94)
Piura
(-5.17 -80.64)
Jicamarca
(-11.95 -76.87)
Pto. Maldonado
(-12.58 -69.18)
El Leoncito
(-31.00 -69.29)
Hyo
Hyo
Alta Floresta
(-9.87 -56.10)
Cuiba
-15.56 -56.07)
LOW LATITUDE IONOSPHERIC SENSOR
MAGNETOMETERS NETWORK
OPERATING STATUS (As of August 2011)
Station
Variation
Instrument
Time
Res.
Starting Date
Operating
Status
Leticia (LET)
Colombia
(-4.19 -69.94)
HDZ LISN
Magnetometer
1 Sec.
April 2009
Operating at
present
Puerto Maldonado
(PMO) - Peru
(-12.58 -69.18)
HDZ LISN
Magnetometer
1 Sec.
March 2008
Operating at
present
El Leoncito (LEO)
Argentina
(-31.00 -69.29)
HDZ LISN
Magnetometer
1 Sec.
September 2008
Operating at
present
Alta Floresta
(ALF) - Brasil
(-9.87 -56.10)
HDZ LISN
Magnetometer
1 Sec.
November 2010
Operating at
present
Cuiba (CBA)
Brasil
(-15.56 -56.07)
HDZ LISN
Magnetometer
1 Sec.
November 20101
Operating at
present
LOW LATITUDE IONOSPHERIC SENSOR
NETWORK
Leticia - Colombia
Universidad Nacional de Colombia
Sede Amazonica Leticia
Latitude : 4° 11' 8.9" S
Longitude : 69° 56' 12.6" W
Elevation : 110m
Installation date : March 2009
(-4.19 -69.94)
LOW LATITUDE IONOSPHERIC SENSOR
NETWORK
Puerto Maldonado -Peru
IGP-Marina de Guerra del Peru
Latitude : 12° 34' 8.9" S
Longitude : 69° 10' 12.6" W
Elevation: 100m
Installation date : March 2008
LOW LATITUDE IONOSPHERIC SENSOR
NETWORK
El Leoncito - Argentina
IGP-CASLEO-Universidad de la Plata
Latitude : 31° 00' 8.9" S
Longitude : 69° 17' 12.6" W
Elevation: 2400m
Installation date : September 2008
LOW LATITUDE IONOSPHERIC SENSOR
NETWORK
Alta Floresta - Brasil
Instituto de Pesquisas Espaciales
Latitude : 9° 52' 0.9" S
Longitude : 56° 06' 0.6" W
Elevation: 100m
Installation date : October 2010
Starting date : April 2011
LOW LATITUDE IONOSPHERIC SENSOR
NETWORK
Cuiba – Brasil
Instituto de Pesquisas Espaciales
Latitude : 15° 33' 04.9" S
Longitude : 56° 04' 12" W
Elevation: 100m
Installation date : October 2010
LOW LATITUDE IONOSPHERIC SENSOR
NETWORK
Jicamarca - Peru
Instituto Geofisico del Peru
Latitude : 11° 56' 04.9" S
Longitude : 76° 52' 12" W
Elevation: 1100m
Reinstallation date : October 2010
LISN Magnetometer System
Main Features
•
Three-axis fluxgate variometer system
•
Total measurement range +/- 60000 nT
•
Three selectable dinamic range
+/- 500/2000/5000 nT for +/- 2.5V
•
One second recording interval
•
20 bits data logger built in, USB output
•
Resolution 0.1 nT
•
Low power and robustness
•
Supply voltages 110/220 VAC, 12VDC
LISN Magnetometer System
Block Diagram (First Version)
Amp, Gain and signal
conditioning
(Analogic)
Y
Z
ADC-20 Pico tech.
High resolution
Data logger
X
Analog Output
(+/- 10V, 5 channels)
GPS Receiver
Not Implemented yet
Sensor
Magnetometer Control Unit
Unit
(buried)
Mag-03MCES70
LISN Web Server
Bartington
Remote Users
1 minute Reported data
Web monitoring
USB
PC
Windows
Based
Internet
Time Synchro
USNO
FTP
Internet
LISN Magnetometer Program
Magnetometer Output files
Configuration Input files
Setuplog.cfg
Lisnplot.cfg
Lisn_logon.txt
Log file
(ASCII)
Magnetometer
Data Logger
program
One second
Data file
(Raw)
One minute
Data file
(ASCII)
Compressed
Data file
LISN Magnetometer Data
• 1 Second Data File ( 8 characters and 3 characters extension)
Hourly ZIP Data file (Size 40KB)
Name :
jic15812.10s
Where :
JIC = Station Code (3 digits)
158 = Day of year (1-365)
12 = Hour (00-23)
10s = Extension, Year(10), type(s)
• 1 Minute Data File (8 characters and 3 characters extension)
Daily ASCII column formatted (Size 110KB)
Name :
jic15jun.10m
Where :
JIC = Station Code (3 digits)
15 = Day
JUN = Month
10m = Extension, Year(10), type(m)
Magnetometer Data Flow
Magnetometer
System
Sensor
&
SCU
&
DAS
Local DB
USB Interface
Computer
FTP
FTP data transfer
•One Second ZIP file each hr.
•One Minute file each (1-5 Min).
•One Day Minute file each
day (00hr)
Computer
MAIN LISN SERVER
LISN DB
Data Acquisition Program
Data Collection (Sep. 9-10, 2011
Data Collection (Sep. 9-10, 2011
Data Collection (Sep. 9-10, 2011
LISN Magnetometer System
Hardware Development
•The experimental considerations of the current magnetometers
in operation have led us to develop and construct a new high
performance fluxgate magnetometer at Jicamarca.
• Internal GPS has been incorporated for precisely and timing
software controlled of the overall magnetometer operation.
• We describe also a development plan for a new data
acquisition system based on embebed and stand alone system
which is being carried out at IGP.
LISN Magnetometer System
Block Diagram (Second Version)
Filtering
Isolation &
buffer
30 m
DC signal conditioning
Offset and gain control
Magnetometer
Software
(+/- 10V, 5 channels)
Integrated
Electronics
T. Sensor
Y
X
Z
Sensor Unit
High resolution
Data logger
ADC-20 Pico tech
LISN Local
HDD
GPS Receiver
Garmin GPS 15xLF
Aplicaction TFP
AC/DC
Power supply
Control Unit
Internet
LISN
Database
Users
LOW LATITUDE IONOSPHERIC SENSOR
NETWORK
LISN Magnetometer System
Sistema de sensado y
acondicionado de señal
(electrónica
analógica)
Z
Sensor
Unit
MicroDAQ-Lite
Adquisition board
(Data loggers)
GESBC-9260
USB
X
Analog Output
(+/- 10V, 5 channels)
GPS Receiver
Garmin GPS 15 LF
Magnetómeter Control Unit
Bartington Mag03MCES70
RS232
Embebed
system
(Aplicación para
gestión y
tranferencia
de datos )
SO -> LINUX
embebido
LISN Web Server
Internet
Remote Users
Web monitoring
1 Minute Reported data
Conclusions and Recommendations
• Five magnetometres are operating in near real time.
• There are some data gaps in the reported data due to
logistical problems such as Internet and lost of data due
to stations AC power outages or PC fails.
• It is recommended to have a periodical stations
maintenance and calibrations at least once a year
• Upgrade the existing LISN magnetometers network
with the new developed magnetometers
• Improve the logisic and communications beetwen
operators
Conclusions and Recommendations
MANY THANKS
The JRO LISN Team
Second LISN Workshop, San Jose Dos Campos, Nov 07-10, 2011