Preliminary results from the Orbiting Solar Observatory 8 - Transition-zone dynamics over a sunspot

1976 ◽  
Vol 210 ◽  
pp. L97 ◽  
Author(s):  
E. C., Jr. Bruner ◽  
E. G. Chipman ◽  
B. W. Lites ◽  
G. J. Rottman ◽  
R. A. Shine ◽  
...  
Keyword(s):  
Transition Zone ◽  
Solar Observatory ◽  
Preliminary Results

Preliminary results from the Orbiting Solar Observatory 8 - Velocities in the solar chromosphere observed in the SI II lambda 1816 line

1976 ◽  
Vol 210 ◽  
pp. L103 ◽  
Author(s):  
E. G. Chipman ◽  
E. C., Jr. Bruner ◽  
R. A. Shine ◽  
B. W. Lites ◽  
G. J. Rottman ◽  
...  
Keyword(s):  
Solar Observatory ◽  
Solar Chromosphere ◽  
Preliminary Results

scholarly journals Refined magnetostratigraphic position of the Shyrokyne unit in loess sequences from Central Ukraine

2019 ◽  
Vol 28 (2) ◽  
pp. 301-312
Author(s):  
D. V. Hlavatskyi
Keyword(s):  
Transition Zone ◽  
Careful Analysis ◽  
Magnetic Polarity ◽  
Polarity Reversal ◽  
Preliminary Results ◽  
Soil Complex ◽  
Lowermost Part ◽  
Geomagnetic Polarity

The youngest geomagnetic polarity reversal, the Matuyama–Brunhes boundary (MBB), which occurred 780 kyr ago, is a “golden spike” in the age calibration of sediment sequences. The use of palaeomagnetic method as a stratigraphic tool in the study of loess sequences from Ukraine originated some 50 years ago. One major problem in using the available data is the contradictory position of the MBB in different stratigraphic units, which affected historic evolution of thechronostratigraphic models of the Quaternary in Ukraine. The most important units in this regard are the Shyrokyne and Martonosha units, in which the MBB had been defined most often. This paper provides the careful analysis of the previous magnetostratigraphic data and new preliminary results from key loess-palaeosol sections in Central Ukraine. Shyrokyne palaeosol complex in four loesspalaeosol sections located in the Middle Dnieper and Podolia regions has been palaeomagnetically studied. It is shown that the transition zone of the Matuyama–Brunhes palaeomagnetic reversal is most likely located at the base of the soil complex. In the Vyazivok section the MBB has been found in the lowermost part of Shyrokyne palaeosol sh1. Preliminary palaeomagnetic studies of theStari Kaydaky section reveal that the MBB cannot be defined at least above sh1 subunit. Medzhybizh and Holovchyntsi sections were deposited after the Matuyama–Brunhes reversal; however, the palaeomagnetic informativeness of the part of studied strata is doubtful. Magnetostratigraphic position of the Shyrokyne unit below the MBB in some previous studies is explained by methodological reasons and inconsistent chronostratigraphic models. The paper substantiates that normal magnetic polarity zone in the Pryazovya loess and upper part of the Shyrokyne soil is not associated with the influence of secondary processes on the palaeomagnetic record.

Preliminary results from the Orbiting Solar Observatory 8 - Persistent velocity fields in the chromosphere and transition region

1976 ◽  
Vol 210 ◽  
pp. L111 ◽  
Author(s):  
B. W. Lites ◽  
E. C., Jr. Bruner ◽  
E. G. Chipman ◽  
R. A. Shine ◽  
G. J. Rottman ◽  
...  
Keyword(s):  
Transition Region ◽  
Velocity Fields ◽  
Solar Observatory ◽  
Preliminary Results

scholarly journals Soil recovery following landslides at Whatawhata Research Station, Waikato, New Zealand: preliminary results

2016 ◽  
Vol 16 ◽  
pp. 179-184
Author(s):  
A.M. Noyes ◽  
M.R. Balks ◽  
V.G. Moon ◽  
D.J. Lowe
Keyword(s):  
New Zealand ◽  
Soil Carbon ◽  
Transition Zone ◽  
Shear Zones ◽  
Research Station ◽  
Landslide Area ◽  
Transition Zones ◽  
Preliminary Results ◽  
Accumulation Zone ◽  
Soil Recovery

This research investigates soil recovery following landslides at the Whatawhata Research Station 20 km west of Hamilton. Six landslides were studied, ranging in age from pre-1953 to 2014. The landslides were divided into four zones: shear zones (mean of 25% of landslide area), intact accumulation zones (20%), transition zones (40%), and re-deposition zones (15%), along with a control. Soils were well-developed in the control and intact accumulation zones and least recovered in the shear and re-deposition zones. Mean A horizon depths ranged from 2 cm in the shear and re-deposition zones to 7 cm in the transition zone, 17 cm in the intact accumulation zone, and 20 cm in the control. Mean soil carbon contents were lower (P

Preliminary results from the Orbiting Solar Observatory 8 - Observations of optically thin lines

1976 ◽  
Vol 210 ◽  
pp. L107 ◽  
Author(s):  
R. A. Shine ◽  
D. Roussel-Dupre ◽  
E. C., Jr. Bruner ◽  
E. G. Chipman ◽  
B. W. Lites ◽  
...  
Keyword(s):  
Solar Observatory ◽  
Preliminary Results

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

Some Recent Results in Quiescent Prominence Spectrometry

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman
Keyword(s):  
Real Time ◽  
Computer System ◽  
Spectral Response ◽  
Absolute Intensity ◽  
Solar Observatory ◽  
Target Size ◽  
Small Target ◽  
Signal Averaging ◽  
Quiescent Prominence

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.

Cyclic Evolution of Sunspots: Gleaning New Results from Old Data

2000 ◽  
Vol 179 ◽  
pp. 163-165
Author(s):  
S. K. Solanki ◽  
M. Fligge ◽  
P. Pulkkinen ◽  
P. Hoyng
Keyword(s):  
Sunspot Number ◽  
Sunspot Cycle ◽  
Preliminary Results ◽  
Butterfly Diagram

AbstractThe records of sunspot number, sunspot areas and sunspot locations gathered over the centuries by various observatories are reanalysed with the aim of finding as yet undiscovered connections between the different parameters of the sunspot cycle and the butterfly diagram. Preliminary results of such interrelationships are presented.

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