tree rings
Extracting a common high frequency signal from Northern Quebec black spruce tree-rings with a Bayesian hierarchical model
... each tree has a different trend and it seems difficult to find a common hidden signal in the low frequency ...separating tree ring areas into their individual growth component and their common hidden ...
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Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE
... SH tree rings reveals the global extent of the cosmogenic signature of extreme fluxes of high-energy solar energetic particles (SEP) in 774 ...The tree ring-based 14 C concentrations predominantly ...
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Using tree-rings to determine large wood residence time and transport pulses in a gravel-bed river
... expensive, tree-ring analyses have been used extensively to document hydrogeomorphological dynamics [9] and large wood dynamics ...262 tree-rings samples extracted from the very large raft of the ...
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Investigating high-resolution stable isotope signals of annual tree rings across a moisture gradient with the MuSICA model
... annual tree rings across a moisture gradient with the MuSICA model Lisa Wingate, Didier Bert, Emmi Hilasvuori, Raphaël Dulhoste, James Rolfe, Michel Stievenard, Pasi Kolari, Pertti Hari, Tuomas Aakala, ...
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Tree-rings to climate relationships in nineteen provenances of four black pines sub-species ( Pinus nigra Arn.) growing in a common garden from Northwest Tunisia
... species. Tree rings can also be used to assess the influence of forest management and climate on tree growth, productivity and mortality (Fritts 1976; Chen et ...2010). Tree rings are ...
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Streamflow variability over the 1881–2011 period in northern Québec: comparison of hydrological reconstructions based on tree rings and geopotential height field reanalysis
... and tree ring mean flow series reveals that the two series are not statistically dif- ferent, since the ANATEM ensemble is within the tree ring confidence interval (green envelopes), except for the 1930– ...
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Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE
... School of Environment and Natural Resources, University of Vermont, Burlington, Vermont 05405, USA. 19 Tree-Ring Laboratory, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964-8000, USA. ...
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Investigating seasonal precipitation variations with high-resolution carbon isotope analyses of annual tree rings
... Seasonal variations in precipitation were recently shown to dominate the mean intra-‐annual variation in the carbon isotope composition of evergreen wood (δ 13 C cellullose ) across a range of biomes (Schubert & ...
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Tree-rings and the climate of New Caledonia (SW pacific) preliminary results from Araucariacae
... same optical density as ring limits may be observed on these three pictures. Comparison of the climatic data with the different ring thickness profiles from L3. 647. a): Climatic data: a[r] ...
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Monitoring Climate Sensitivity Shifts in Tree-Rings of Eastern Boreal North America Using Model-Data Comparison
... in boreal black spruce forests in eastern North America by comparing observed and model-based 91.. climate-growth relationships over 1908-2013.[r] ...
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Approximatting rings of integers in number fields
... the rings S/ (flp pn) - For each rt, the ideals pn are pairwise coprime, so pn ) ’--" rip S/pn ...the rings 0, then we have an isomorphism S ^--’ Tjp Sp of Zp-algebras, the product extending over the ...
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Gathering of Six Robots on Anonymous Symmetric Rings
... In particular, we consider the case of only six robots placed on the nodes of an anonymous ring in such a way they constitute a symmetric place- ment with respect to one single axis of symmetry, and we ask whether there ...
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Polynomial cycles in certain rings of rationals
... Lemma 10 provides us with a list of all normalized cycles of length three and to deduce the list of all non-equivalent such cycles with the use of Lemma 4 we have to[r] ...
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Local $\varepsilon _0$-characters in torsion rings
... Lemma 4.17. Suppose that k is finite. Let R be an algebraically closed field of positive characteristic 6= p. The following two lemmas are easily proved... Lemma 4.19.. of equal characte[r] ...
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Broadcasting in WDM Optical Rings and Tori
... 101 - 54602 Villers lès Nancy Cedex France Unité de recherche INRIA Rennes : IRISA, Campus universitaire de Beaulieu - 35042 Rennes Cedex France Unité de recherche INRIA Rhône-Alpes : 65[r] ...
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Ordered Semiautomatic Rings with Applications to Geometry
... semiautomatic rings with automatic addition and comparisons which are dense subrings of the real numbers and asks how these can be used to represent geometric objects such that certain operations and trans- ...
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On vortex rings around vortices: an optimal mechanism
... vortex rings at the periphery of the vortex ...vortex rings is linked to the intense and rapid amplification of specific disturbances in the form of azimuthal velocity streaks that eventually evolve into ...
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Combining phrase-based and tree-to-tree translation
... 4.1 Improving BLEU Score The 6188 sentences were split four times into 3000 training sentences and 3000 testing sentences. In each split of the data, the BLEU score of the phrase system was about 1.1 higher than the BLEU ...
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Influences of tropical tree diversity on tree root decomposition
... Variation in enzymatic activity measurements found in this study when using contrasting pH values is congruent with that found in diverse tropical soils by Turner (201[r] ...
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The Structure of Chariklo’s Rings from Stellar Occultations
... This study is made in a context where material has also been detected around the second largest Centaur, Chiron (again using stellar occultations). The nature of this material is still debated and it could be interpreted ...
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