Engineering topics
Publications and source records attributed to Reese, E. J..
Recent longitudinal measurements of Jupiter's Red Spot are presented to illustrate the constancy of the 90-day oscillation. Observational parameters of the Red Spot, the three south temperate ovals, and a summary of the zenographic latitudes of the belts are tabulated for the time interval from 1972 to 1975. Drift rates and the mean latitudes of the atmospheric currents for the 1974-75 apparition are presented.
Photographs of Venus taken in ultraviolet light from Sept. 29, 1963, to May 29, 1971, indicate a general planet-wide circulation in the upper atmosphere of that planet having velocities which varied with time from -87 to -127m/sec at the equator. Positional measurements on 67 pairs of photographs which show the recurrence of similar patterns after intervals of one to three rotations suggest an asymmetric bimodal distribution of these velocities. The ultraviolet markings appear to be randomly distributed and quite ephemeral in nature, rarely enduring in a recognizable pattern for more than 20 days and usually much less. Attention is directed to an apparent but fictitious mean sidereal rotation period of approximately 4.06 days derived from observations which are made at a single station and span many months or years. Under such conditions this fictitious value for the rotation period is produced by the commensurability of the one-day period of earth and the assumed four-day period of the atmosphere of Venus.
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A ten-year summary of recent measurements of the latitudes of Jupiter's belts and the rotation periods of the various atmospheric currents is presented. Comparison of these measured values with earlier visual observations indicates that the latter are sufficiently accurate to provide a reliable and continuous record of latitudes since 1908 and rotation periods since 1898. A summary of the earlier observations is also given.
Photographic observations of Jupiter and its Red Spot between Dec. 11, 1970, and Oct. 12, 1971, are reported. The Red Spot had a mean rotation period of 9 hr 55 min 38.5 sec, the shortest to be observed since the apparition of 1931-1932. The outstanding event of the apparition was an outburst of activity in the South Equatorial Belt which was similar in many ways to the great disturbance of 1928.
Summary of some recent measurements of Saturn, particularly latitudes of the faint atmospheric belts. The measurements reveal no seasonal variations in belt latitudes. A small, bright spot at Saturnigraphic latitude 57 deg has been photographed on 46 nights from Oct. 25, 1969, to Feb. 27, 1971. This feature, which is by far the longest lived spot ever observed on Saturn, has had an average rotation period of 10 hr 36 min 27.9 sec plus or minus 0.2 sec.
Jupiter Red Spot and other photographic features in 1969-1970, noting 90-day oscillation in longitude and south tropical zone disturbance
Jupiter Red Spot 1968-1969 photographic observations, discussing area darkness, longitude oscillation and acceleration
Latitude measurement of Jovian belts with photographic plates
Photographic measurements of latitude and longitude of Jovian features
Photographic measurements of Jovian features in Southern Hemisphere of Jupiter
Mercury rotation period determination by surface photography, correcting earlier interpretation
Jupiter Red Spot vorticity at perimeter indicated by interaction with dark spots circulating along south equatorial belt
Uniformly rotating source hypothesis for catastrophic Jupiter south equatorial belt disturbances tested with computer
Photographic measurement used to confirm Mercury rotation period