Results 11 to 20 of about 1,798,975 (310)
Astronomical time scale of the Turonian constrained by multiple paleoclimate proxies
Geoscience Frontiers, 2020 One of the clocks that record the Earth history is (quasi-) periodic astronomical cycles. These cycles influence the climate that can be ultimately stored in sedimentary rocks.
Chao Ma, Mingsong Li
semanticscholar +4 more sources
Time-Scale and Time-Frequency Analyses of Irregularly Sampled Astronomical Time Series [PDF]
EURASIP Journal on Advances in Signal Processing, 2005 We evaluate the quality of spectral restoration in the case of irregular sampled signals in astronomy. We study in details a time-scale method leading to a global wavelet spectrum comparable to the Fourier period, and a time-frequency matching pursuit ...
S. Roques, C. Thiebaut
doaj +3 more sources
Extending the astronomical (polarity) time scale into the Miocene [PDF]
Earth and Planetary Science Letters, 1995 An astronomical time scale is presented for the late Miocene based on the correlation of characteristic sedimentary cycle patterns in marine sections in the Mediterranean to the 65”N summer insolation curve of La90 [ 1,2] with present-day values for the dynamical ellipticity of the Earth and tidd dissipation by the moon.
Frederik J Hilgen, Cor G Langereis
exaly +4 more sources
Computational Intelligence Challenges and Applications on Large-Scale Astronomical Time Series Databases [PDF]
IEEE Computational Intelligence Magazine, 2014 Time-domain astronomy (TDA) is facing a paradigm shift caused by the exponential growth of the sample size, data complexity and data generation rates of new astronomical sky surveys.
P. Huijse +4 more
semanticscholar +6 more sources
AstroCatR: a mechanism and tool for efficient time series reconstruction of large-scale astronomical catalogues [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 Time series data of celestial objects are commonly used to study valuable and unexpected objects such as extrasolar planets and supernova in time domain astronomy.
Ce Yu +5 more
semanticscholar +4 more sources
Chinese Journal of Aeronautics, 2018 In this work, we describe a new multiframe Super-Resolution (SR) framework based on time-scale adaptive Normalized Convolution (NC), and apply it to astronomical images.
Rui Guo, Xiaoping Shi, Yi Zhu, Ting Yu
semanticscholar +2 more sources
New Astronomical Time Scale for the Early Jehol Biota in the Luanping Basin, Northeastern China
Palaeogeography, Palaeoclimatology, Palaeoecology, 2022 The Early Cretaceous Jehol Biota in northeastern China significantly increased our understanding of the Mesozoic terrestrial ecosystem and the origin and evolution of a number of biological groups. The early evolutional phase of the Jehol Biota is best recorded in the Members 2 and 3 of the Dabeigou Formation (D-M2–3) in the Luanping Basin and their ...
Ya-Nan Fang +8 more
semanticscholar +3 more sources
Newsletters on Stratigraphy, 2015 The construction of a permanent astronomical time scale for the Paleocene tuned to stable 405-kyr eccentricity is hampered by uncertainties in the number of eccentricity-related cycles between the Cretaceous-Paleogene (K/Pg) boundary and the Early Late Paleocene Event (ELPE) situated just below the Selandian-Thanetian boundary.
F. Hilgen +4 more
semanticscholar +4 more sources