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Extracting a common high frequency signal from Northern Quebec black spruce tree-rings with a Bayesian hierarchical model
Northern Quebec black spruce tree-rings Bayesian hierarchical model
2009/12/3
One basic premise of dendroclimatology is that tree rings can be viewed as climate proxies, i.e. rings are assumed to contain some hidden information about past climate. From a statistical perspective...
Analytical treatment of the nonlinear electron cloud effect and the combined effects with beam-beam and space charge nonlinear forces in storage rings
electron cloud effect beam-beam effect space charge effect BEPCⅡ
2009/8/17
In this paper we treat first some nonlinear beam dynamics problems in storage rings, such as beam dynamic apertures due to magnetic multipoles, wiggles, beam-beam effects, nonlinear space charge effec...
Formation of a two-dense-rings-pattern disk from the collapse of a cloud
two-dense-rings-pattern disk cloud
2009/7/9
Formation of a two-dense-rings-pattern disk from the collapse of a cloud。
The formation of collimated outflows and concentric rings in magnetized Planetary Nebulae
outflows magnetized Planetary Nebulae
2009/6/11
The formation of collimated outflows and concentric rings in magnetized Planetary Nebulae。
Collisional Planetary Rings：The Role of the Width and the Optical Depth
Collisional Planetary Rings Width Optical Depth
2009/6/5
Collisional Planetary Rings：The Role of the Width and the Optical Depth。
Distribution and Movement of Gulf Stream Rings
David Y. Lai
The distribution, number and movement of cyclonic Gulf Stream rings were estimated from an analysis of 50 000 temperature records ...
The Application of Linear Quasigeostrophic Dynamics to Gulf Stream Rings
Linear Quasigeostrophic Dynamics Gulf Stream Rings
2009/3/7
We have used linear quasigeostrophic dynamics to calculate the motion, decay and dispersion rates of radially symmetric initial disturbances with scales appropriate to Gulf Stream Rings. Baroclinic ri...
The Physical Oceanography of Two Rings Observed by the Cyclonic Ring Experiment. Part II：Dynamics
Physical Oceanography Dynamics Cyclonic Ring Experiment
2009/2/16
Data from the 1977 Cyclonic Ring Experiment is used to examine the, density, velocity, vorticity and energy distributions in a Gulf Stream cyclonic ring. A time series on ring BOB provides information...
The Physical Oceanography of Two Rings Observed by the Cyclonic Ring Experiment. Part I：Physical Structures
Cyclonic Ring Experiment Physical Structures
2009/2/16
Eight cruises over a 10-month period in the North Atlantic have provided the Cyclonic Ring Experiment with observations of two rings. Life histories, structure and structural changes have been studied...
The Propagation and Evolution of Cyclonic Gulf Stream Rings
Cyclonic Gulf Stream Rings Evolution Propagation
2009/2/13
Numerical simulations of the propagation of cyclonic Gulf Stream rings are made using a primitive equation β-plane model of a flat-bottomed two-layer ocean with a rigid lid. Initially circular eddies ...
Instability and Splitting of Mesoscale Rings using a Two-Layer Quasi-Geostrophic Model on an f-Plane
Mesoscale Rings f-Plane Two-Layer Quasi-Geostrophic Model
2009/2/10
Asymmetric instability of a circular Gaussian ring and evolution of a ring shape in a nonlinear case are studied using a two-layer quasi-geostrophic model on an f plane. Ring behavior is classified on...
Using the historical data set, this study describes the anticyclonic rings that separated from the Loop Current in the eastern Gulf of Mexico. Six quasi-synoptic data sets are used to describe the evo...
Linear Stability of Large, Elliptical Warm-Core Rings
Linear Stability Elliptical Warm-Core Rings
2009/1/12
An analytical solution for a confined, elliptical lens of light water is perturbed to test the linear stability of elongated warm-core rings. The asymptotic expression of the solution when the eddy's ...
Observations suggest that heat loss to the atmosphere causes an important modification of the density structure of warm core rings. In this study, f-plane models of rings under a cooling atmosphere ar...
Some Effects of the Wind on Rings
Wind temperature air-sea momentum transfer sea surface velocity
2009/1/8
Some simple air-sea momentum transfer models, which include sea surface velocity and temperature, are considered for their effects on Gulf Stream rings. Perturbing the stress calculation with sea surf...