搜索结果: 1-15 共查到“理学 reconstructions”相关记录21条 . 查询时间(0.078 秒)
Uncertainties in tree-ring-based climate reconstructions probed
Uncertainties tree-ring-based climate reconstructions
2016/2/22
Current approaches to reconstructing past climate by using tree-ring data need to be improved on so that they can better take uncertainty into account, new University of Otago-led suggests.Tree growth...
Analysis of a Permo-Triassic polarity transition in different absolute reconstructions of Pangaea,considering a model with features of the present Earth magnetic field
Permo-Triassic Pangaea absolute reconstruction Earth magnetic field polarity transition
2015/9/2
The main objective of this paper is to show that the distribution of transitional palaeomagnetic data recorded at 250 Ma are in agreement with simulated data that depend on the sampling site, using a ...
Comparing a thermo-mechanical Weichselian Ice Sheet reconstruction to reconstructions based on the sea level equation: aspects of ice configurations and glacial isostatic adjustment
thermo-mechanical Weichselian Ice Sheet reconstruction to reconstructions sea level equation ice configurations glacial isostatic adjustment
2015/1/6
In this study we compare a recent reconstruction of the Weichselian Ice Sheet as simulated by the University of Maine ice sheet model (UMISM) to two reconstructions commonly used in glacial isostatic ...
Climate forcing reconstructions for use in PMIP simulations of the Last Millennium (v1.1)
Climate forcing reconstructions PMIP
2014/12/11
We update the forcings for the PMIP3 experiments
for the Last Millennium to include new assessments of historical land use changes and discuss new suggestions for calibrating solar activity proxies t...
Climate forcing reconstructions for use in PMIP simulations of the last millennium (v1.0)
Climate forcing reconstructions PMIP simulations last millennium
2014/12/9
Simulations of climate over the Last Millennium (850–1850 CE) have been incorporated into the third phase of the Paleoclimate Modelling Intercomparison Project (PMIP3). The drivers of climate over thi...
Environmental Reconstructions from Laminated Lake Sediments, Lake C3, Ellesmere Island, Canadian High Arctic
Environmental Reconstructions Laminated Lake Sediments Lake C3 Ellesmere Island Canadian High Arctic
2014/10/22
Sediments in Lake C3, Ellesmere Island, Nunavut Canada (82°50’N, 78°2’W) contain annual laminations (varves), which provide a record of sediment accumulation for 1900+ years. Varve totals are based on...
Lossy Broadcasting in Two-Way Relay Networks with Common Reconstructions
Two-Way Relay Networks Common Reconstructions
2010/11/24
The broadcast phase (downlink transmission) of the two-way relay network is studied in the source coding and joint source-channel coding settings. The rates needed for reliable communication are char...
On the Accuracy of Weak Lensing Cluster Mass Reconstructions
galaxies clusters general— gravitational lensing
2010/11/11
We study the bias and scatter in mass measurements of galaxy clusters resulting from fitting sphericallysymmetric Navarro, Frenk & White (NFW) model to the reduced tangential shear profile measured in...
Reconstructions from boundary measurements on admissible manifolds
Reconstructions from boundary measurements admissible manifolds
2010/11/9
We prove that a potential $q$ can be reconstructed from the Dirichlet-to-Neumann map for the Schrodinger operator $-\Delta_g + q$ in a fixed admissible 3-dimensional Riemannian manifold $(M,g)$. We a...
We propose a stable algorithm for the reconstruction of the internal conductivity of a biological object using acousto-electric measurements. Namely, the conventional impedance tomography scheme is s...
Sensitivity of ensemble Lagrangian reconstructions to assimilated wind time step resolution
ensemble Lagrangian reconstructions wind time step resolution
2010/8/12
We study the impact of temporal and spatial resolution and changes in modelled meteorological winds in the context of diffusive ensemble Lagrangian reconstructions. In situ tracer measurements are mod...
Pollen-based biome reconstructions for Latin America at 0, 6000 and 18 000 radiocarbon years ago
Latin America Pollen-based biome
2009/12/3
The biomisation method is used to reconstruct Latin American vegetation at 6000±500 and 18 000±1000 radiocarbon years before present (14C yr BP) from pollen data. Tests using modern pollen data from 3...
High resolution stratigraphy of the Lower Jurassic and Aalenian of Arctic regions as the basis for detailed palaeobiogeographic reconstructions
High resolution stratigraphy Lower Jurassic Arctic regions palaeobiogeographic reconstructions
2009/12/2
Lower Jurassic and Aalenian deposits are widespread in the Arctic Basin and in northwestern Europe. The succession of Lower Jurassic lithologic units is very similar throughout the Arctic regions. The...
OSL dating in palaeoenvironmental reconstructions.A discussion from a user's perspective
OSL dating chronology stratigraphy palaeoenvironmental reconstruction Quaternary
2009/10/21
Four studies with series of OSL dated aeolian sediments are outlined and used for a discussion of the reliability of this dating method in palaeoenvironmental reconstructions. The OSL ages form series...
Reconstructions of the early and middle Holocene climate and environment based on δ13C and δ18O records in biogenic carbonates;Lake Niepruszewskie,western Poland
Biogenic carbonates Stable carbon and oxygen isotopes Lacustrine sediments palaeoclimate
2009/10/20
Apolinarska, K. 2009. Reconstructions of the early and middle Holocene climate and environment based on δ13C and δ18O records in biogenic carbonates; Lake Niepruszewskie, western Poland. Acta Geologic...