Present Status of the LISN Magnetometer Operation and new Developments by Oscar A. Veliz, Ricardo...

Present Status of the LISN Magnetometer Operation

and new Developmentsby

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


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(-31.00 -69.29)

Pto. Maldonado(-12.58 -69.18)

Jicamarca(-11.95 -76.87)

Piura(-5.17 -80.64)

Leticia(-4.19 -69.94)

Alta Floresta(-9.87 -56.10)

Cuiba-15.56 -56.07)

HyoHyo


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)


1 Sec. March 2008 Operating at present

El Leoncito (LEO)

Argentina

(-31.00 -69.29)


1 Sec. September 2008 Operating at present

Alta Floresta

(ALF) - Brasil

(-9.87 -56.10)


1 Sec. November 2010 Operating at present

Cuiba (CBA)

Brasil

(-15.56 -56.07)


1 Sec. November 20101 Operating at present

LOW LATITUDE IONOSPHERIC SENSOR NETWORK

Leticia - ColombiaUniversidad Nacional de Colombia

Sede Amazonica LeticiaLatitude : 4° 11' 8.9" S

Longitude : 69° 56' 12.6" WElevation : 110m

Installation date : March 2009

(-4.19 -69.94)


Puerto Maldonado -PeruIGP-Marina de Guerra del Peru

Latitude : 12° 34' 8.9" SLongitude : 69° 10' 12.6" W

Elevation: 100mInstallation date : March 2008


El Leoncito - ArgentinaIGP-CASLEO-Universidad de la Plata


Elevation: 2400mInstallation date : September 2008


Alta Floresta - BrasilInstituto de Pesquisas Espaciales


Elevation: 100mInstallation date : October 2010

Starting date : April 2011


Cuiba – BrasilInstituto de Pesquisas Espaciales

Latitude : 15° 33' 04.9" SLongitude : 56° 04' 12" W

Elevation: 100mInstallation date : October 2010


Jicamarca - PeruInstituto Geofisico del Peru

Latitude : 11° 56' 04.9" SLongitude : 76° 52' 12" W

Elevation: 1100mReinstallation date : October 2010

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


Amp, Gain and signal conditioning

(Analogic)

Analog Output(+/- 10V, 5 channels)

ADC-20 Pico tech.High resolution

Data loggerPC

Windows BasedInternet

Time SynchroUSNOGPS Receiver

Not Implemented yet

LISN Web Server

Remote Users1 minute Reported data

Web monitoring

Magnetometer Control Unit

USB

XZ

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 secondData file(Raw)

One minuteData file(ASCII)

CompressedData file

Log file(ASCII)

MagnetometerData Loggerprogram

LISN Magnetometer Data

• 1 Second Data File ( 8 characters and 3 characters extension)Hourly ZIP Data file (Size 40KB)Name : jic15812.10sWhere : 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.10mWhere : JIC = Station Code (3 digits)

15 = DayJUN = Month10m = Extension, Year(10), type(m)

FT

P

Magnetometer Data Flow

USB InterfaceComputer

Computer

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



Block Diagram (Second Version)

XY

Z

IntegratedElectronicsT. Sensor

FilteringIsolation &

buffer

DC signal conditioningOffset and gain control

High resolution Data logger

ADC-20 Pico tech

AC/DCPower supply

GPS ReceiverGarmin GPS 15xLF

30 m

(+/- 10V, 5 channels)

USB

RS232

Internet

Aplicaction TFP

LISN Database Users

Sensor Unit Control Unit

Magnetometer

Software

LISN Local HDD


Sistema de sensado y acondicionado de señal

(electrónicaanalógica)

Analog Output(+/- 10V, 5 channels)

MicroDAQ-LiteAdquisition board

(Data loggers)

GESBC-9260

Embebed system

(Aplicación paragestión y

tranferencia de datos )

SO -> LINUX embebido

GPS ReceiverGarmin GPS 15 LF

LISN Web Server

Remote UsersWeb monitoring

1 Minute Reported data

Magnetómeter Control Unit

USB

RS232

XZ

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


Present Status of the LISN Magnetometer Operation and new Developments by Oscar A. Veliz, Ricardo...

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