Radio Observatorio de Jicamarca - Instituto Geofísico del Perú

YEARBOOK – HUANCAYO GEOMAGNETIC DATA 20091 INTRODUCTIONThis publication contains basic information on geomagnetic observations carried outduring 2009 in the Huancayo Geomagnetic Observatory (HUA), which belongs to theGeophysical Institute of Peru (IGP).In 2009, like in the previous years, the Huancayo Geomagnetic Observatory haskept a close collaboration with the International Real-Time Magnetic observatory Network(INTERMAGNET), which Huancayo Geomagnetic Observatory had joined to in 2003.2 DESCRIPTION OF THE HUANCAYO GEOMAGNETIC OBSERVATORYThe observatory was established in 1919 by the Carnegie Institution of Washington,and it began to acquire continuously geomagnetic records since March 1 st 1922. TheGeomagnetic Observatory is located some 13 km NW from Huancayo city. The Absolutehouse “main pier” is situated in latitude 12º 02' 28.69'' south and longitude 75º 19' 14.11''west, at an elevation of 3314 meters above sea level (3336 m. WGS 84).The Geomagnetic Observatory consists of 4 houses: Absolute house, variometerhouse, one laboratory house, operations office and a guest house.Huancayo Geomagnetic Observatory is an INTERMAGNET Magnetic Observatory(IMO) standard, and it is equipped with magnetometers with accurate time control, residing atthe magnetic observatory site, having full absolute control.IAGA code:HUACommenced operation: 01 March 1922Main pier: Pier E-2Geographic latitude (Pier E-2):12º 02' 28.69'' SGeographic longitude (Pier E-2):75º 19' 14.11'' WAltitude (Pier E-2): 3314 m. a. s. l. (3336 m. WGS 84)Geomagnetic latitude: 1.94 S (IGRF Year - 2009)Geomagnetic longitude:3.12 WK 9 index lower limit:241 nTPrincipal reference mark:Main Pillar SouthReference to main mark azimuth:187º 14' 00''Reference to secondary mark azimuth: 187º 21' 24''Reference mark distance:620.0 mObservers: Rosales D., Vidal E., and Orihuela S.Table 2.1 Technical specification of observatory.Apartado 130207, Lima 13, PerúTeléfonos (+51-1)317-2313 - Fax (+51-1)317-2312