Examined are associational aspects as they relate the maximum amplitude R M for the sunspot cycle to the rate of rise Ral during the ascending phase, where R M is the smoothed sunspot number at cycle maximum and Rat is the sum of the monthly mean sunspot numbers for selected 6-month intervals (At) m
The prediction of shrimp landings from sunspot activity
โ Scribed by P. A. Driver
- Publisher
- Springer-Verlag
- Year
- 1978
- Tongue
- English
- Weight
- 232 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0025-3162
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โฆ Synopsis
Annual landings of shrimp (Crangon crangon) in the Lancashire and Western Sea Fisheries District (UK) have previously been predicted I year in advance on the basis of rainfall and air temperature records of the previous year. For the port of Lytham, abundance of shrimp has been found to be correlated with mean sunspot number. Since sunspot number can be predicted fairly accurately, this correlation has given the prediction of landings a greater accuracy than was formerly possible. Sunspot numbers can be predicted for a considerable period of time in advance, and therefore abundance of c. crangon at Lytham can be estimated for several years.
๐ SIMILAR VOLUMES
A statistical study of sunspot activity during 1969 to 1986 was carried out by using the number of sunspot groups and their areas. We found a 17-month periodicity, which is consistent with the 500-day periodicity of flare occurrence (Ichimoto et aL, 1985). The short-term periodicity of sunspot acti
Digitized Mount Wilson sunspot data from 1917 to 1985 are analyzed to examine group areas as a function of latitude distance (x) from the central latitude of activity in each hemisphere. On average these group areas are larger for the smallest values of I~J. The effect is similar to that seen for th