Effects of a total solar eclipse on stream drift

1977 ◽  
Vol 28 (6) ◽  
pp. 793 ◽  
Author(s):  
PJ Suter ◽  
WD Williams

Stream drift was recorded in the Acheron River, Victoria, on 23 October 1976. A total solar eclipse occurred at 1640-1643 h (Eastern Standard Time). No noticeable effect on the number or types of animals drifting was observed.

1977 ◽  
Vol 28 (6) ◽  
pp. 799 ◽  
Author(s):  
PL Cadwallader ◽  
AK Eden

The effect of the total solar eclipse of 23 October 1976 on invertebrate drift in Snobs Creek, Victoria, was investigated by taking hourly drift samples in two drift nets between 1300 and 2000 h (Eastern Standard Time) on 22, 23 and 24 October. Paramoera fontana (Amphipoda) and terrestrial arthropods exhibited no pattern in their occurrences in the drift. Nymphs of Baetidae (Ephemeroptera) and Trinotoperla (Plecoptera) were rarely found in the drift except after sunset, but exhibited no increase related to the eclipse. Four taxa, namely helodid (Coleoptera) larvae, the larvae of two species of Leptoceridae and one species of Conoesucus (Trichoptera), were more abundant in the drift after sunset and also exhibited an eclipse-related increase in abundance in the drift. Cricotopus (Diptera) larvae were less abundant in the drift after sunset and also exhibited an eclipse-related decrease in abundance in the drift. The results suggest that light intensity has an effect on the occurrence in the drift not only of dark-active invertebrates but also of some light-active invertebrates.


1994 ◽  
Vol 144 ◽  
pp. 593-596
Author(s):  
O. Bouchard ◽  
S. Koutchmy ◽  
L. November ◽  
J.-C. Vial ◽  
J. B. Zirker

AbstractWe present the results of the analysis of a movie taken over a small field of view in the intermediate corona at a spatial resolution of 0.5“, a temporal resolution of 1 s and a spectral passband of 7 nm. These CCD observations were made at the prime focus of the 3.6 m aperture CFHT telescope during the 1991 total solar eclipse.


1994 ◽  
Vol 144 ◽  
pp. 541-547
Author(s):  
J. Sýkora ◽  
J. Rybák ◽  
P. Ambrož

AbstractHigh resolution images, obtained during July 11, 1991 total solar eclipse, allowed us to estimate the degree of solar corona polarization in the light of FeXIV 530.3 nm emission line and in the white light, as well. Very preliminary analysis reveals remarkable differences in the degree of polarization for both sets of data, particularly as for level of polarization and its distribution around the Sun’s limb.


1917 ◽  
Vol 83 (2145supp) ◽  
pp. 93-93
Author(s):  
Edison Pettit

2016 ◽  
Vol 45 (2) ◽  
pp. 1-47
Author(s):  
Paul Karolyi

This is part 128 of a chronology begun in Journal of Palestine Studies (JPS) 13, no. 3, (Spring 1984). Chronology dates reflect North American Eastern Standard Time. For a more comprehensive overview of regional and international developments related to the peace process, see the Update on Conflict and Diplomacy in JPS 45(2).


2017 ◽  
Vol 1 (1) ◽  
pp. 68-71 ◽  
Author(s):  
Hui Tian ◽  
◽  
ZhongQuan Qu ◽  
YaJie Chen ◽  
LinHua Deng ◽  
...  

1887 ◽  
Vol 42 (251-257) ◽  
pp. 316-318

Carriacou is a small island situated about twenty miles to the north of the island of Grenada, the chief of the Windward group, and furnished an excellent site for the observation of the last solar eclipse. Most of the observers sent by the Eclipse Committee of the Royal Society to the West Indies in August of last year remained at Grenada, or on the small islands in its immediate vicinity, whilst Mr. Maunder and myself occupied the more distant northern station, where the totality was slightly diminished in duration. The work proposed for Mr. Maunder was to secure a series of photographs of the corona, with exposures of 40s. and under, and also to obtain two photographs of the spectrum of the corona with the longest exposures possible.


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