Geomagnetic Principal Magnetic Storms
The abbreviations used for observatory names are as follows: GEOMAGNETIC OBSERVATORIES Code Station Geomagnetic Latitude ABG Alibag AMS Martin de Vivie. These data present the principal magnetic storms for the month as reported by several observatories through cooperation with the International Association of Geomagnetism and Aeronomy (IAGA). These are the data formerly published in the Journal of Geophysical Research. They are now, however, grouped by the
storm rather than by station. The geomagnetic latitude of the station is indicated. The beginning time is given to the hour and minute in UT. The tupe of sudden commencement, if any, together with its magnitude in each element D, H or Z is next in the format: sc = sudden commencement; sc* = small initial impulse followed by main impulse (in this case the amplitude is that of the main pulse only, neglecting the initial brief pulse); dots in these columns represent a stomr with
gradual commencement; blanks indicate no data entries. Signs of amplitudes of D and Z are taken albegraically; D reckoned positive if toward the east and Z reckoned positive if vertically downward. In the next columns the day and the three-hour periods on that day when the K index reached its maximum are given followed by the K index value. In the next three columns the maximum ranges in D, H and Z during the storm are given. The ending time is given only to the nearest hour.
This is the time of cessation of reasonably marked disturbance movements in the trace. More specifically, it is the time when the K index measure has diminished to 2 or less for a reasonable period. For each date the data are listed in north-to-south geomagnetic latitude order.
storm rather than by station. The geomagnetic latitude of the station is indicated. The beginning time is given to the hour and minute in UT. The tupe of sudden commencement, if any, together with its magnitude in each element D, H or Z is next in the format: sc = sudden commencement; sc* = small initial impulse followed by main impulse (in this case the amplitude is that of the main pulse only, neglecting the initial brief pulse); dots in these columns represent a stomr with
gradual commencement; blanks indicate no data entries. Signs of amplitudes of D and Z are taken albegraically; D reckoned positive if toward the east and Z reckoned positive if vertically downward. In the next columns the day and the three-hour periods on that day when the K index reached its maximum are given followed by the K index value. In the next three columns the maximum ranges in D, H and Z during the storm are given. The ending time is given only to the nearest hour.
This is the time of cessation of reasonably marked disturbance movements in the trace. More specifically, it is the time when the K index measure has diminished to 2 or less for a reasonable period. For each date the data are listed in north-to-south geomagnetic latitude order.
Dataset Citation
Cite this dataset when used as a source.
Dataset Identifiers
- ID not available.
ISO 19115-2 Metadata
gov.noaa.ngdc.stp.geomag:G01183
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Ordering Instructions | Ordering Instructions: Price information is available upon request. Prepay by check, money order or bank card There is a standard handling charge, with additional costs for special handling. Orders may be placed via fax, email, regular mail or telephone Custom Order Process: Contact data center for information |
Distributor | Justin Mabie Space and Terrestrial Weather Specialist DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6135 Justin.Mabie@noaa.gov |
Dataset Point of Contact | Justin Mabie Space and Terrestrial Weather Specialist DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6135 Justin.Mabie@noaa.gov |
Time Period | 1966-01-01 to Present |
Spatial Bounding Box Coordinates |
West: -180.000000
East: 180.000000
South: -90.000000
North: 90.000000
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Spatial Coverage Map |
Documentation links not available. |
Publication Dates |
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Edition | First |
Dataset Progress Status | Under development - data is currently in the process of being created |
Data Update Frequency | Monthly |
Supplemental Information | The observatories reporting are listed below the table each month in SGD. s 42.9S ANN Annamalainagar 1.5N API Apia 16.0S BJI Beijing 28.5N CAN Canberra 43.9S CMO College 64.6N CZT Port Alfred 38.5S DRV Dumont d'Urville (Terre Adelie) 75.6S ETT Etaiyapuram 00.6S FRD Fredericksburg 49.6N GNA Gnangara 43.2S GUA Guam 4.0N HER Hermanus 33.7S HON Honolulu 21.1N HYB Hyderabad 7.6N JAI Jaipur 17.3N KRC Karachi 16.4N PAF Port aux Francais (Kerguelen) 56.5S PMG Port Moresby 18.6S SHL Shillong 14.7N SIT Sitka60.0N TRD Trivandrum 1.1S UJJ Ujjain 13.5N |
Purpose | Monitor Geomagnetic Activity Caused by Solar Wind |
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Global Change Master Directory (GCMD) Data Center Keywords
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Global Change Master Directory (GCMD) Project Keywords
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Last Modified: 2015-09-18
For questions about the information on this page, please email: Justin.Mabie@noaa.gov
For questions about the information on this page, please email: Justin.Mabie@noaa.gov