Allkofer, Otto Claus; Andresen, R D; Bagge, E; Dau, W D; Funk, H (1969): Nucleonic intensities investigated during the Atlantic Expedition IQSY 1965 of RV "Meteor" (Appendix) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.666344, Supplement to: Allkofer, OC et al. (1969): Der Einfluß des Erdmagnetfeldes auf die kosmische Strahlung. I. Untersuchungen der Nukleonenkomponente der kosmischen Strahlung während der Atlandischen Expedition IQSY 1965 auf dem Forschungsschiff "Meteor". Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe B Meteorologie und Aeronomie, Gebrüder Bornträger, Berlin, Stuttgart, B3, 48-79
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Abstract:
The nucleonic component of the cosmic rays has been measured by the German research vessel "Meteor" during the Atlantic Expedition IQSY 1965. The pressure corrected intensities fit well the rigidity calculations of Kondo and Kodamo. In this way we confirm the earth's magnetic field model used by these authors. Two positions of the cosmic ray equator have been determined at 29,7 °W (6,5 ± 1) °N and at 19 °W (7 ± 1) °N. These positions agree with the calculated values of Kondo and Kodamo. The total latitude effect of the nucleonic component amounts to 1.74 and 1.76. The measurements were carried out at solar minima activity. Using the values of latitude measurements at maxima solar activity the degree of modulation of the primary cosmic rays was determined in the rigidity range 2 - 13 GV. For rigidity values above 6 GV the modulation remains constant to 20 %.
Coverage:
Median Latitude: 19.728452 * Median Longitude: -20.594949 * South-bound Latitude: -8.100000 * West-bound Longitude: -34.900000 * North-bound Latitude: 53.800000 * East-bound Longitude: 10.000000
Date/Time Start: 1965-08-07T00:00:00 * Date/Time End: 1965-12-15T00:00:00
Minimum ALTITUDE: 5 m * Maximum ALTITUDE: 5 m
Event(s):
M2-track * Latitude Start: 56.200000 * Longitude Start: 6.800000 * Latitude End: 53.800000 * Longitude End: 7.200000 * Date/Time Start: 1965-07-21T00:00:00 * Date/Time End: 1965-12-15T23:00:00 * Location: Atlantic * Campaign: M2 (IQSY - Jahre der ruhigen Sonne, Atlantische Expedition 1965) * Basis: Meteor (1964) * Method/Device: Underway cruise track measurements (CT)
Comment:
Specification of the monitor geometry: The neutrons were deteced by a six BF3-counters. The special dimensions of these counters are: Active length 34 inch, diameter 1.5 inch, center wire diameter 10**-3 inch, pressure 450 Torr BF3, enriched to 96 % with boron. Factory Fa. Wood, Chicago. The neutron monitor has ellectronically be separated into two parts. Every three counters have been connected to one printer. The counting rates were printed every 15 minutes.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Geocode | |||
| 2 | LATITUDE | Latitude | Geocode | |||
| 3 | LONGITUDE | Longitude | Geocode | |||
| 4 | ALTITUDE | Altitude | m | Geocode | ||
| 5 | Date/time end | Date/time end | Allkofer, Otto Claus | |||
| 6 | Latitude 2 | Latitude 2 | Allkofer, Otto Claus | geomagnetic latitude in a centered dipol model of the earth's magnetic field | ||
| 7 | Intensity | Intensity | cpm | Allkofer, Otto Claus | corrected. The counting rate of the neutron monitor has been printed every 15 minutes. The 15 minute values have been summed up to three hour values, which have been corrected to the standard pressure of 1013 hPa using the pressure coefficient alpha = -(0.72)% hPa. From the corrected three hour values a half day mean value is derived. The statistical error for a mean half day is smaller than 0.5 %. | |
| 8 | Threshold rigidity, vertical | Threshold rigidity vert | GV | Allkofer, Otto Claus | Calculated | vertical STROEMER threshold rigidity calculated in a centered dipole model of the earth's field |
| 9 | Threshold rigidity, vertical | Threshold rigidity vert | GV | Allkofer, Otto Claus | interpolated | after Quenby and Wenk (1962), linear interpolation |
| 10 | Threshold rigidity, vertical | Threshold rigidity vert | GV | Allkofer, Otto Claus | interpolated | after Kondo and Kodamo (1965), linear interpolation |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
497 data points