Determination of Earth geomagnetic field parameters and research of their variation is an actual and complex problem of natural science. It is related to knowledge of the state of natural physical system outer parameters of present geophysical and geodynamical processes. Variation of geomagnetic field is continuous process evident in different Earth surface places but in different ways. It can be determined by precise measurements. Precise repeated observations of geomagnetic field parameters at repeat stations is one of basic methods. For determination of certain epoch geomagnetic field parameters, detailed information on geomagnetic field and its variations is necessary. Data of geomagnetic field research is used for solution of different theoretical and practical tasks. Data is important for solving tasks of navigation, geophysics, geodynamics, explorations of minerals. According requirements of NATO and ICAO (International Civil Aviation Organization) – parameters of geomagnetic field are presented on the topographic maps and navigation charts of the air ports. Compass or director is used in geodesy for orientation, when instrument arrow is oriented along lines of geomagnetic field. Information on geomagnetic declination is necessary for direction determination in this case. Value of declination and its annual change is presented on topographical maps. Geomagnetic and gravimetric data are useful for exploration of minerals. Gravity value and geomagnetic induction help us... [to full text]

Determination of Earth geomagnetic field parameters and research of their variation is an actual and complex problem of natural science. It is related to knowledge of the state of natural physical system outer parameters of present geophysical and geodynamical processes. Variation of geomagnetic field is continuous process evident in different Earth surface places but in different ways. It can be determined by precise measurements. Precise repeated observations of geomagnetic field parameters at repeat stations is one of basic methods. For determination of certain epoch geomagnetic field parameters, detailed information on geomagnetic field and its variations is necessary. Data of geomagnetic field research is used for solution of different theoretical and practical tasks. Data is important for solving tasks of navigation, geophysics, geodynamics, explorations of minerals. According requirements of NATO and ICAO (International Civil Aviation Organization) – parameters of geomagnetic field are presented on the topographic maps and navigation charts of the air ports. Compass or director is used in geodesy for orientation, when instrument arrow is oriented along lines of geomagnetic field. Information on geomagnetic declination is necessary for direction determination in this case. Value of declination and its annual change is presented on topographical maps. Geomagnetic and gravimetric data are useful for exploration of minerals. Gravity value and geomagnetic induction help us... [to full text]