A rigorous non-iterative procedure for rapid inverse solution of very long geodesics     

Emanuel M. Sodano 《Journal of Geodesy》1958,32(2):13-25

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Die Ausgleichung und Genauigkeit Eines Polygonzuges Nach der Methode der Verschiebungsellipsen     

Emanuel Procházka 《Studia Geophysica et Geodaetica》1968,12(1):11-27

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Ultrastructural variation and key ER chaperones response induced by heat stress in intestinal cells of sea cucumber Apostichopus japonicus     

Wang  Shasha  Zheng  Yingqiu  Chen  Muyan  Storey  Kenneth B. 《中国海洋湖沼学报》2021,39(1):317-328

Journal of Oceanology and Limnology - The unfolded protein response (UPR) is an important protective and compensatory strategy used during endoplasmic reticulum stress caused by factors including...  相似文献   

Provenance of Neoproterozoic and early Paleozoic siliciclastic rocks of the Teplá-Barrandian unit (Bohemian Massif): Evidence from U–Pb detrital zircon ages     

Kerstin Drost  Axel Gerdes  Teresa Jeffries  Ulf Linnemann  Craig Storey 《Gondwana Research》2011,19(1):213-231

New LA-ICP-MS U–Pb detrital zircon ages from Ediacaran and Paleozoic siliciclastic rocks are used to constrain provenance and paleogeographic affinities of the Teplá-Barrandian unit (TBU) in the centre of the Bohemian Massif (Central Europe, Czech Republic). The samples taken span the period from ≤ 635 Ma to ～ 385 Ma and permit recognition of provenance changes that reflect changes in geotectonic regime. Detrital zircon age spectra of two Ediacaran, one Lower Cambrian and three Upper Ordovician samples resemble the ages known from the NW African proportion of Gondwana, particularly the Trans-Saharan belt, while three rocks from higher Lower Cambrian to Lowermost Ordovician strata contain detritus that may have been derived exclusively from local sources. The age spectrum of the Devonian rock is a combination of the NW Gondwanan and local features. These new findings in combination with a wide range of published data are in agreement with a Neoproterozoic subduction-related setting at the margin of Gondwana followed by a Cambrian/Early Ordovician rifting stage and an Ordovician passive margin setting. Furthermore the data are in favour of a position of the TBU at the Gondwanan margin throughout pre-Variscan times.  相似文献   

Three-dimensional photoionization modelling of the hydrogen-deficient knots in the planetary nebula Abell 30     

B. Ercolano  M. J. Barlow  P. J. Storey  X.-W. Liu  T. Rauch  K. Werner 《Monthly notices of the Royal Astronomical Society》2003,344(4):1145-1154

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Ca ii K interstellar observations towards early-type disc and halo stars     

J. V. Smoker  W. R. J. Rolleston  H. R. M. Kay  D. Kilkenny  R. Morras  M. Arnal  F. P. Keenan  C. J. Mooney  P. L. Dufton  R. S. I. Ryans  N. C. Hambly  D. O'Donoghue  H. McGillivray 《Monthly notices of the Royal Astronomical Society》2003,346(1):119-134

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U–Pb isotopic dating of titanite microstructures: potential implications for the chronology and identification of large impact structures     

K.?PapapavlouEmail authorView author&#;s OrcID profile  J.?R.?Darling  D.?E.?Moser  I.?R.?Barker  EIMF  L.?F.?White  P.?C.?Lightfoot  C.?D.?Storey  J.?Dunlop 《Contributions to Mineralogy and Petrology》2018,173(10):82

Identifying and dating large impact structures is challenging, as many of the traditional shock indicator phases can be modified by post-impact processes. Refractory accessory phases, such as zircon, while faithful recorders of shock wave passage, commonly respond with partial U–Pb age resetting during impact events. Titanite is an accessory phase with lower Pb closure temperature than many other robust chronometers, but its potential as indicator and chronometer of impact-related processes remains poorly constrained. In this study, we examined titanite grains from the Sudbury (Ontario, Canada) and Vredefort (South Africa) impact structures, combining quantitative microstructural and U–Pb dating techniques. Titanite grains from both craters host planar microstructures and microtwins that show a common twin–host disorientation relationship of 74° about <102>. In the Vredefort impact structure, the microtwins deformed internally and developed high- and low-angle grain boundaries that resulted in the growth of neoblastic crystallites. U–Pb isotopic dating of magmatic titanite grains with deformation microtwins from the Sudbury impact structure yielded a ²⁰⁷Pb/²⁰⁶Pb age of 1851?±?12 Ma that records either the shock heating or the crater modification stage of the impact event. The titanite grains from the Vredefort impact structure yielded primarily pre-impact ages recording the cooling of the ultra-high-temperature Ventersdorp event, but domains with microtwins or planar microstructures show evidence of U–Pb isotopic disturbance. Despite that the identified microtwins are not diagnostic of shock-metamorphic processes, our contribution demonstrates that titanite has great potential to inform studies of the terrestrial impact crater record.  相似文献   

Deep incision in an Aptian carbonate succession indicates major sea‐level fall in the Cretaceous     

Telm Bover‐Arnal  Ramon Salas  Joan Guimerà  Josep Anton Moreno‐Bedmar 《Sedimentology》2014,61(6):1558-1593

Long‐term relative sea‐level cycles (0·5 to 6 Myr) have yet to be fully understood for the Cretaceous. During the Aptian, in the northern Maestrat Basin (Eastern Iberian Peninsula), fault‐controlled subsidence created depositional space, but eustasy governed changes in depositional trends. Relative sea‐level history was reconstructed by sequence stratigraphic analysis. Two forced regressive stages of relative sea‐level were recognized within three depositional sequences. The first stage is late Early Aptian age (intra Dufrenoyia furcata Zone) and is characterized by foreshore to upper shoreface sedimentary wedges, which occur detached from a highstand carbonate platform, and were deposited above basin marls. The amplitude of relative sea‐level drop was in the order of tens of metres, with a duration of <1 Myr. The second stage of relative sea‐level fall occurred within the Late Aptian and is recorded by an incised valley that, when restored to its pre‐contractional attitude, was >2 km wide and cut ≥115 m down into the underlying Aptian succession. With the subsequent transgression, the incision was backfilled with peritidal to shallow subtidal deposits. The changes in depositional trends, lithofacies evolution and geometric relation of the stratigraphic units characterized are similar to those observed in coeval rocks within the Maestrat Basin, as well as in other correlative basins elsewhere. The pace and magnitude of the two relative sea‐level drops identified fall within the glacio‐eustatic domain. In the Maestrat Basin, terrestrial palynological studies provide evidence that the late Early and Late Aptian climate was cooler than the earliest part of the Early Aptian and the Albian Stage, which were characterized by warmer environmental conditions. The outcrops documented here are significant because they preserve the results of Aptian long‐term sea‐level trends that are often only recognizable on larger scales (i.e. seismic), such as for the Arabian Plate.  相似文献   

A fast intensity simulator for tropical cyclone risk analysis     

Kerry Emanuel 《Natural Hazards》2017,88(2):779-796

Robust estimates of tropical cyclone risk can be made using large sets of storm events synthesized from historical data or from physics-based algorithms. While storm tracks can be synthesized very rapidly from statistical algorithms or simple dynamical models (such as the beta-and-advection model), estimation of storm intensity by using full-physics models is generally too expensive to be practical. Although purely statistical intensity algorithms are fast, they may not be general enough to encompass the effects of natural or anthropogenic climate change. Here we present a fast, physically motivated intensity algorithm consisting of two coupled ordinary differential equations predicting the evolution of a wind speed and an inner core moisture variable. The algorithm includes the effects of ocean coupling and environmental wind shear but does not explicitly simulate spatial structure, which must be handled parametrically. We evaluate this algorithm by using it to simulate several historical events and by comparing a risk analysis based on it to an existing method for assessing long-term tropical cyclone risk. For simulations based on the recent climate, the two techniques perform comparably well, though the new technique does better with interannual variability in the Atlantic. Compared to the existing method, the new method produces a smaller increase in global tropical cyclone frequency in response to global warming, but a comparable increase in power dissipation.  相似文献   

Aspartic acid racemization in teeth from Ketef Hinnom,a late Holocene burial cave in Jerusalem: Evidence for reuse     

M. Sinibaldi  Glenn A. Goodfriend  Gabriel Barkay  S. Marchese  Emanuel Gil-av 《Geoarchaeology》1999,14(5):441-454

The Ketef Hinnom tombs, lying just outside the walls of the old city of Jerusalem, were carved out of bedrock during the 7th–5th century B.C. Several artefacts dating to the Late Hellenistic Period (ca. 100 B.C.) have also been found within the tombs. Aspartic acid (Asp) racemization in 31 samples of human tooth dentine from these tombs was analyzed in order to evaluate the possible reuse of the tombs during this later period. A range of D/L Asp values was found: a group with values averaging 0.062 and another group averaging 0.043. These D/L values are close to those expected for the two archeological age groups as calculated from (1) the kinetics of Asp racemization as established from experimental studies at higher temperatures and in vivo racemization rates, and (2) the effective annual temperature in the tombs, as measured using the Pallman method. These results thus support the later reuse of the tombs for burials. Several factors contribute to the accuracy of Asp racemization dating, including the age of the individual at death, uncertainties concerning Asp racemization kinetics, and effects of temperature history. © 1999 John Wiley & Sons, Inc.  相似文献