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

Outline Network Deployement and Installation LISN Magnetometers description Magnetometer Operational Status Preliminary Results New developments and Conclusions LOW LATITUDE IONOSPHERIC SENSOR MAGNETOMETERS NETWORK Second LISN Workshop, San Jose Dos Campos, Nov 07-11, 2011

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 Madonado- Peru(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

El Leoncito ( ) Pto. Maldonado ( ) Jicamarca ( ) Piura ( ) Leticia ( ) Alta Floresta ( ) Cuiba ) Hyo

LOW LATITUDE IONOSPHERIC SENSOR MAGNETOMETERS NETWORK OPERATING STATUS (As of August 2011) StationVariation Instrument Time Res. Starting DateOperating Status Leticia (LET) Colombia ( ) HDZ LISN Magnetometer 1 Sec.April 2009Operating at present Puerto Maldonado (PMO) - Peru ( ) HDZ LISN Magnetometer 1 Sec.March 2008Operating at present El Leoncito (LEO) Argentina ( ) HDZ LISN Magnetometer 1 Sec.September 2008Operating at present Alta Floresta (ALF) - Brasil ( ) HDZ LISN Magnetometer 1 Sec.November 2010Operating at present Cuiba (CBA) Brasil ( ) HDZ LISN Magnetometer 1 Sec.November 20101Operating 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 ( )

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

Main Features Three-axis fluxgate variometer system Total measurement range +/ 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

Amp, Gain and signal conditioning (Analogic) Analog Output (+/- 10V, 5 channels) ADC-20 Pico tech. High resolution Data logger PC Windows Based Internet Time Synchro USNO GPS Receiver Not Implemented yet LISN Web Server Remote Users 1 minute Reported data Web monitoring Magnetometer Control Unit USB X Z Internet Sensor Unit (buried) FTP Mag-03MCES70 Bartington Y Block Diagram (First Version)

LISN Magnetometer Program Setuplog.cfg Lisnplot.cfg Lisn_logon.txt Configuration Input files Magnetometer Output files One second Data file (Raw) One minute Data file (ASCII) Compressed Data file Log file (ASCII) Magnetometer Data Logger program

LISN Magnetometer Data 1 Second Data File ( 8 characters and 3 characters extension) Hourly ZIP Data file (Size 40KB) Name: jic s 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)

FTPFTP Magnetometer Data Flow USB Interface Sensor & SCU & DAS Local DB MAIN LISN SERVER Magnetometer System LISN DB FTP FTP data transfer One Second ZIP file each hr. One Minute file each (1-5 Min). One Day Minute file each day (00hr)

Data Acquisition Program

Data Collection (Sep. 9-10, 2011

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. Hardware Development LISN Magnetometer System

Block Diagram (Second Version) X Y Z Integrated Electronics T. Sensor Filtering Isolation & buffer DC signal conditioning Offset and gain control High resolution Data logger ADC-20 Pico tech AC/DC Power supply GPS Receiver Garmin GPS 15xLF 30 m (+/- 10V, 5 channels) USB RS232 Internet Aplicaction TFP LISN Database Users Sensor UnitControl Unit Magnetometer Software LISN Local HDD

LOW LATITUDE IONOSPHERIC SENSOR NETWORK

LISN Magnetometer System Sistema de sensado y acondicionado de señal (electrónica analógica) Analog Output (+/- 10V, 5 channels ) MicroDAQ-Lite Adquisition board (Data loggers) GESBC-9260 Embebed system (Aplicación para gestión y tranferencia de datos ) SO -> LINUX embebido GPS Receiver Garmin GPS 15 LF LISN Web Server Remote Users Web monitoring 1 Minute Reported data Magnetómeter Control Unit USB RS232 X Z Internet Sensor Unit Bartington Mag- 03MCES70

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