Accession Number:

AD0656751

Title:

RESEARCH DIRECTED TOWARD THE OBSERVATION AND INTERPRETATION OF SOLAR PHENOMENA.

Descriptive Note:

Final rept. 1 Mar 64-30 Apr 67,

Corporate Author:

HARVARD COLL OBSERVATORY CAMBRIDGE MASS SOLAR DEPT

Personal Author(s):

• Bell,Barbara
• DeMastus,Howard L.
• Menzel,Donald H.

Report Date:

1967-05-01

Pagination or Media Count:

33.0

Abstract:

The first section describes research at Harvard in the following major categories 1 Solar-terrestrial studies, relating geomagnetic distrubances and shortwave radio fadeouts to aspects of solar activity, and investigating a possible influence of phase of the moon upon solar-terrestrial correlations. 2 Analysis of solar observations made at Sacramento Peak and elsewhere of prominences, sunspots, and the green coronal line. 3 Theoretical studies in magnetohydrodynamics, leading toward development of a model for sunspots and in atomic theory, on the intensities of spectral lines for improved interpretation of the solar spectrum. The second section reviews the operation at Sacramento Peak of the optical solar patrols of flares in the light of H alpha, of sun spots in white light, and of the coronal emission lines. The calibration of the coronal spectrograph is discussed, and the Sacramento Peak scale compared to that used at other observatories. A cooperative effort, begun in 1964, between the Harvard patrol group at Sacramento Peak and the USAF Air Weather Service is described, including a training course program.

Descriptors:

• (*SOLAR DISTURBANCES
• *IONOSPHERIC DISTURBANCES)
• (*SUN
• SCIENTIFIC RESEARCH)
• SUNSPOTS
• MOON
• SOLAR FLARES
• SOLAR CORONA
• LINE SPECTRA
• MAGNETOHYDRODYNAMICS
• SOLAR SPECTRUM
• SOLAR ATMOSPHERE
• MAGNETIC FIELDS

Subject Categories:

• Astrophysics
• Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE