A high-resolution relative time scale for the Viséan Stage (Carboniferous) of the Kulm Basin (Rhenish Mountains, Germany)

2008 ◽  
pp. n/a-n/a ◽  
Author(s):  
Dieter Korn ◽  
Bernd Kaufmann
Keyword(s):  
High Resolution ◽  
Time Scale ◽  
Relative Time ◽  
Rhenish Mountains ◽  
Visean Stage

scholarly journals TOI-150b and TOI-163b: two transiting hot Jupiters, one eccentric and one inflated, revealed by TESS near and at the edge of the JWST CVZ

2019 ◽  
Vol 490 (1) ◽  
pp. 1094-1110 ◽  
Author(s):  
Diana Kossakowski ◽  
Néstor Espinoza ◽  
Rafael Brahm ◽  
Andrés Jordán ◽  
Thomas Henning ◽  
...  
Keyword(s):  
High Resolution ◽  
Time Scale ◽  
High Resolution Spectroscopy ◽  
Spin Orbit ◽  
Eccentric Orbit ◽  
Hot Jupiters ◽  
Eclipse Observations ◽  
James Webb Space Telescope ◽  
Hot Jupiter

Abstract We present the discovery of TYC9191-519-1b (TOI-150b, TIC 271893367) and HD271181b (TOI-163b, TIC 179317684), two hot Jupiters initially detected using 30-min cadence Transiting Exoplanet Survey Satellite (TESS) photometry from Sector 1 and thoroughly characterized through follow-up photometry (CHAT, Hazelwood, LCO/CTIO, El Sauce, TRAPPIST-S), high-resolution spectroscopy (FEROS, CORALIE), and speckle imaging (Gemini/DSSI), confirming the planetary nature of the two signals. A simultaneous joint fit of photometry and radial velocity using a new fitting package juliet reveals that TOI-150b is a $1.254\pm 0.016\ \rm {R}_ \rm{J}$, massive ($2.61^{+0.19}_{-0.12}\ \rm {M}_ \rm{J}$) hot Jupiter in a 5.857-d orbit, while TOI-163b is an inflated ($R_ \rm{P}$ = $1.478^{+0.022}_{-0.029} \,\mathrm{ R}_ \rm{J}$, $M_ \rm{P}$ = $1.219\pm 0.11 \, \rm{M}_ \rm{J}$) hot Jupiter on a P = 4.231-d orbit; both planets orbit F-type stars. A particularly interesting result is that TOI-150b shows an eccentric orbit ($e=0.262^{+0.045}_{-0.037}$), which is quite uncommon among hot Jupiters. We estimate that this is consistent, however, with the circularization time-scale, which is slightly larger than the age of the system. These two hot Jupiters are both prime candidates for further characterization – in particular, both are excellent candidates for determining spin-orbit alignments via the Rossiter–McLaughlin (RM) effect and for characterizing atmospheric thermal structures using secondary eclipse observations considering they are both located closely to the James Webb Space Telescope (JWST) Continuous Viewing Zone (CVZ).

scholarly journals High resolution stratigraphy of the Devonian-Carboniferous transitional beds in the Rhenish Mountains

Fossil Record ◽  
2003 ◽  
Vol 6 (1) ◽  
pp. 79-124 ◽  
Author(s):  
D. Korn ◽  
D. Weyer
Keyword(s):  
New Species ◽  
High Resolution ◽  
Quantitative Evaluation ◽  
Carbonate Content ◽  
Northern Margin ◽  
Rugose Corals ◽  
Neue Art ◽  
Rhenish Mountains ◽  
A New Species ◽  
Exact Correlation

The Devonian-Carboniferous Boundary sections at Hasselbachtal, Oese, Apricke, and Ober-Rödinghausen, all located at the northern margin of the Rhenish Mountains, were measured in detail. A semi-quantitative evaluation of the carbonate content and resulting carbonate curves permitted a highly exact correlation of these sections. This result is supported by data on ammonoid records and volcanoclastic horizons. Carbonate fluctuations within the Hangenberg Limestone are regarded as showing a 100000 years cyclicity. A new ammonoid genus <i>Hasselbachia</i> n. gen. and the species <i>Paprothites ruzhencevi</i> n. sp. are described. Among the rugose corals, a new species <i>Hillaxon hassel</i> n. sp., is erected. <br><br> Die Devon/Karbon-Grenzprofile Hasselbachtal, Oese, Apricke und Ober-Rödinghausen, alle auf der Nordflanke des Remscheid-Altenaer Sattels gelegen, wurden detailliert aufgenommen. Die halbquantitative Ermittlung des Karbonatgehaltes und daraus resultierenden Karbonatkurven eignen sich für eine sehr genaue Korrelation dieser Profile, die durch Funde von Ammonoideen sowie durch vulkanoklastische Horizonte unterstützt wird. Wechsel im Karbonatgehalt werden als 100000 Jahres-Zyklizität gedeutet. Die neue Ammonoideen-Gattung <i>Hasselbachia</i> n. gen. sowie die Art <i>Paprothites ruzhencevi</i> n. sp. werden beschrieben. Unter den rugosen Korallen wird die neue Art <i>Hillaxon hassel</i> n. sp. errrichtet. <br><br> doi:<a href="http://dx.doi.org/10.1002/mmng.20030060105" target="_blank">10.1002/mmng.20030060105</a>

scholarly journals Structure of the poleward wall of the trough and the inclination of the geomagnetic field above the EISCAT radar

1997 ◽  
Vol 15 (6) ◽  
pp. 740-746 ◽  
Author(s):  
D. G. Jones ◽  
I. K. Walker ◽  
L. Kersley
Keyword(s):  
High Resolution ◽  
Electron Density ◽  
Time Scale ◽  
Geomagnetic Field ◽  
Energy Input ◽  
Current Model ◽  
Soft Particle ◽  
Dynamic Feature ◽  
Eiscat Radar ◽  
Good Agreement

Abstract. A special high-resolution routine of the EISCAT radar has been used to investigate the structure and development of the poleward wall of a deep trough in electron density. The feature was tracked by the radar during a 7-hour period under very quiet geomagnetic conditions. The field-aligned nature of the structure enabled an estimate to be made of the inclination of the geomagnetic field above EISCAT that was in good agreement with the current model. Observations of narrow field-aligned enhancements in electron temperature demonstrated that the wall of this trough is a dynamic feature, reforming regularly as the electron density responds on a time scale of tens of minutes to energy input from soft-particle precipitation.

Differences among sub-orbital time scale events recorded in two high-resolution loess sections, China, during the last deglaciation

2009 ◽  
Vol 198 (1-2) ◽  
pp. 246-254 ◽  
Author(s):  
Qingyu Guan ◽  
Baotian Pan ◽  
Na Li ◽  
Hongshan Gao ◽  
Qiong Li ◽  
...  
Keyword(s):  
High Resolution ◽  
Time Scale ◽  
Last Deglaciation ◽  
The Last Deglaciation

scholarly journals Evaluation of CMORPH Precipitation Products at Fine Space–Time Scales

2009 ◽  
Vol 10 (1) ◽  
pp. 300-307 ◽  
Author(s):  
Dawit A. Zeweldi ◽  
Mekonnen Gebremichael
Keyword(s):  
High Resolution ◽  
Time Scales ◽  
Spatial Patterns ◽  
Time Scale ◽  
Statistical Techniques ◽  
Spatial Fields ◽  
Satellite Rainfall ◽  
Performance Statistics ◽  
Averaging Time ◽  
Temporally Correlated

Abstract In this study, a comparison of the spatial patterns of high-resolution precipitation products obtained from the Climate Prediction Center’s morphing technique (CMORPH), which is a satellite-only product, and gauge-adjusted Next Generation Weather Radar (NEXRAD) rainfall observations is performed using a variety of statistical techniques for the Little Washita watershed region in Oklahoma for a 3-yr period. Results show that 1) the performance statistics of CMORPH show tremendous variability from one hour to the next, suggesting that the performance statistics are dynamic in time, and therefore each satellite rainfall product should be accompanied by an error product to make it more meaningful; 2) CMORPH is positively biased in summer and negatively biased in winter, consistent with the findings of previous studies; 3) CMORPH spatial fields tend to be smoother than NEXRAD output; 4) the errors are temporally correlated, in particular within the range from 1 to 6 accumulation hours, implying that averaging CMORPH products over these time scales does not reduce the errors significantly; and 5) the errors become less correlated in time as the averaging time scale increases to the range from 6 to 24 h.

scholarly journals Pre- versus post-mass extinction divergence of Mesozoic marine reptiles dictated by time-scale dependence of evolutionary rates

2017 ◽  
Vol 284 (1854) ◽  
pp. 20170241 ◽  
Author(s):  
Ryosuke Motani ◽  
Da-yong Jiang ◽  
Andrea Tintori ◽  
Cheng Ji ◽  
Jian-dong Huang
Keyword(s):  
High Resolution ◽  
Time Scale ◽  
Mass Extinction ◽  
Divergence Time ◽  
Temporal Characteristic ◽  
Evolutionary Rates ◽  
Morphological Data ◽  
Mass Extinctions ◽  
Marine Reptiles ◽  
Permian Mass Extinction

The fossil record of a major clade often starts after a mass extinction even though evolutionary rates, molecular or morphological, suggest its pre-extinction emergence (e.g. squamates, placentals and teleosts). The discrepancy is larger for older clades, and the presence of a time-scale-dependent methodological bias has been suggested, yet it has been difficult to avoid the bias using Bayesian phylogenetic methods. This paradox raises the question of whether ecological vacancies, such as those after mass extinctions, prompt the radiations. We addressed this problem by using a unique temporal characteristic of the morphological data and a high-resolution stratigraphic record, for the oldest clade of Mesozoic marine reptiles, Ichthyosauromorpha. The evolutionary rate was fastest during the first few million years of ichthyosauromorph evolution and became progressively slower over time, eventually becoming six times slower. Using the later slower rates, estimates of divergence time become excessively older. The fast, initial rate suggests the emergence of ichthyosauromorphs after the end-Permian mass extinction, matching an independent result from high-resolution stratigraphic confidence intervals. These reptiles probably invaded the sea as a new ecosystem was formed after the end-Permian mass extinction. Lack of information on early evolution biased Bayesian clock rates.

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