Publications
Papers in Refereed Journals
Spatiotemporal model for the progression of sand blowouts
H. Yizhaq, Y. Ashkenazy, N. Levin, and H. Tsoar, accept to
Physica A.
The relation between the statistics of open ocean currents
and the temporal correlations of the wind
G. Bel and Y. Ashkenazy, New Journal of Physics 15, 053024 (2013).
Biogenic crust
dynamics on sand dunes
S. Kinast, E. Meron, H. Yizhaq and Y. Ashkenazy,
Physical Review E 87, 020701(R) (2013).
Dynamics of a snowball ocean
Y. Ashkenazy, H. Gildor, M. Losch, F. A. Macdonald,
D. P. Schrag, E. Tziperman, Nature 495, 90-93 (2013).
Multiple sea-ice states and abrupt MOC transitions in a general
circulation ocean model
Y. Ashkenazy, M. Losch, H. Gildor, D. Mirzayof, and
E. Tziperman, Climate Dynamics 40, 1803-1817 (2013). DOI
10.1007/s00382-012-1546-2.
Continental constriction and sea ice thickness in a
Snowball-Earth scenario
E. Tziperman, D. S. Abbot, Y. Ashkenazy, H. Gildor, D. Pollard,
C. G. Schoof, and D. P. Schrag
Journal of Geophysical Research 117, C05016 (2012). doi:10.1029/2011JC007730
A new approximation for the dynamics of topographic Rossby
waves over an arbitrary bottom profile
Y. Ashkenazy, N. Paldor, and Y. Zarmi, Tellus A 64, 18160 (2012).
doi:10.3402/tellusa.v64i0.18160.
Sand dune mobility under climate change in the Kalahari and
Australian Deserts
Y. Ashkenazy, H. Yizhaq, and H. Tsoar, Climatic Change 112, 901-923 (2012). doi:10.1007/s10584-011-0264-9.
Box Modeling of the Eastern Mediterranean Sea
Y. Ashkenazy, P. Stone and P. Malanotte-Rizzoli, Physica A 391, 1519-1531
(2012), doi:10.1016/j.physa.2011.08.026.
On the probability and spatial distribution of ocean surface currents
Y. Ashkenazy and H. Gildor, Journal of Physical Oceanography 41, 2295-2306
(2011) doi: 10.1175/JPO-D-11-04.1.
On the meridional structure of extra-tropical Rossby waves
Y. Ashkenazy, N. Paldor, and Y. Zarmi, Tellus 63A, 817-827 (2011), doi: 10.1111/j.1600-0870.2011.00516.x.
Seasonality effects on nonlinear properties of hydrometeorological records
V.N. Livina, Y. Ashkenazy, A. Bunde, and S. Havlin,
In Extremis: Disruptive Events and Trends in Climate and
Hydrology (Eds. J. Kropp & H. J. Schellnhuber), Springer (2011).
The effect of Milankovitch variations in insolation on equatorial seasonality
Y. Ashkenazy, I. Eisenman, H. Gildor, and E. Tziperman, Journal of
Climate 23 (23), 6133-6142 (2010).
Preservation of long range temporal correlations under extreme
random dilution
D. Mirzayof and Y. Ashkenazy, Physica A 389 (24), 5573-5580 (2010).
Long-range temporal correlations of ocean surface currents,
Y. Ashkenazy and H. Gildor, Journal of Geophysical Research 114, C09009 (2009),
doi:10.1029/2008JC005235.
Sand dune dynamics and climate change: A modeling approach
H. Yizhaq, Y. Ashkenazy, and H. Tsoar, Journal of Geophysical Research 114,
F01023 (2009), doi:10.1029/2008JF001138.
Settlement fluctuations and environmental changes in Israel's coastal plain
during the early bronze age
A. Faust and Y. Ashkenazy, Levant 41 (1), 19-39 (2009), doi:
10.1179/175638009x448230.
Asymmetry of daily temperature records
Y. Ashkenazy, Y. Feliks, H. Gildor, E. Tziperman, Journal
of Atmospheric Sciences 65 (10), 3327-3336 (2008), doi:10.1175/2008JAS2662.1.
Wind spatial variability and topographic wave frequency
E. Shilo, Y. Ashkenazy, A. Rimmer, S. Assouline, and Y. Mahrer,
Journal of Physical Oceanography 38 (9), 2085-2096 (2008),
doi:10.1175/2008JPO3886.1.
Volatility of fractal and multifractal time series
T. Kalisky, Y. Ashkenazy, and S. Havlin, Israel Journal of Earth
Sciences 56, 47-56 (2008).
The timing and significance of maximum and minimum equatorial insolation
Y. Ashkenazy and H. Gildor, Paleoceanography 23, PA1206
(2008), doi:10.1029/2007PA001436.
The effect of wind variability on topographic waves: Lake Kinneret case
E. Shilo, Y. Ashkenazy, A. Rimmer, S. Assouline, P. Katsafados and
Y. Mahrer, Journal of Geophysical Research - Oceans 112, C12024 (2007),
doi:101029/2007JC004336.
Why do active and stabilized dunes coexist under
the same climatic conditions?
H. Yizhaq, Y. Ashkenazy, and H. Tsoar,
Physical Review Letters 98(18), 188001 (2007), doi: 10.1103/PhysRevLett.98.188001
Excess in precipitation as a cause
for settlement decline along
the Israeli coastal plain during the fifth millennium BP
A. Faust and Y. Ashkenazy, Quaternary Research 68, 37-44 (2007), doi:10.1016/j.yqres.2007.02.003.
See also Haaretz Hebrew/English story; available also here.
A wind-induced thermohaline circulation hysteresis and millennial variability regimes
Y. Ashkenazy and E. Tziperman,
Journal of Physical Oceanography 37 (10), 2446-2457 (2007).
The role of phase locking in a simple model for glacial dynamics,
Y. Ashkenazy, Climate Dynamics 27(4), 421-431 (2006), doi: 10.1007/s00382-006-0145-5.
Scenarios regarding the lead of equatorial sea surface
temperature over global ice volume
Y. Ashkenazy and E. Tziperman, Paleoceanography 21, PA2006, doi:10.1029/2005PA001232, (2006).
Volatility of Linear and
Nonlinear Time Series
T. Kalisky, Y. Ashkenazy, and S. Havlin, Physical Review E 72, 011913 (2005).
Simple stochastic models
for glacial dynamics
Y. Ashkenazy, D. R. Baker, and H. Gildor, Journal of Geophysical
Research - Oceans, 110 (C2), C02005, doi:10.1029/2004JC002548, (2005).
Are the 41kyr glacial
oscillations a linear response to Milankovitch forcing?
Y. Ashkenazy and E. Tziperman, Quaternary Science Reviews, 23(18-19),
1879-1890 (2004).
Nonlinearity
and multifractality of climate change in the past 420,000 years,
Y. Ashkenazy, D.R. Baker, H. Gildor, S. Havlin, Geophysical
Research Letters 30(22), 2146, doi:10.1029/2003GL018099 (2003).
Nonlinear
Volatility of River Flux Fluctuations,
V.N. Livina, Y. Ashkenazy, P. Braun, R. Monetti, A. Bunde,
S. Havlin,
Phys. Rev. E 67, 042101 (2003).
Multifractality
of Price Fluctuations --- Stocks versus Commodities,
K. Matia, Y. Ashkenazy, H.E. Stanley,
Europhysics Lett. 61, 422-426 (2003).
Magnitude
and Sign Scaling in Power-Law Correlated Time Series,
Y. Ashkenazy, S. Havlin, P.Ch. Ivanov, C.-K. Peng,
V. Schulte-Frohlinde, H. E. Stanley, Physica A 323, 19-41 (2003).
Correlation
Differences in Heartbeat Fluctuations During Rest and Exercise,
R. Karasik, N. Sapir, Y. Ashkenazy, P.Ch. Ivanov, I. Dvir, P. Lavie,
S. Havlin,
Phys. Rev. E 66, 062902 (2002).
Multifractal
Chaotic Attractors in a System of Delay-Differential
Equations
Modeling Road Traffic,
L.A. Safonov, E. Tomer, V.V. Strygin, Y. Ashkenazy, S. Havlin,
Chaos 12, 1006-1014 (2002).
The
Radiative Kicked Oscillator: A
Stochastic Web or Chaotic Attractor ?
Y. Ashkenazy and L.P. Horwitz, Fractals 10, 353-371 (2002)
Complex
PAtterns of Abnormal Heartbeats,
V. Schulte-Frohlinde, Y. Ashkenazy, A.L. Goldberger, P.Ch. Ivanov,
M. Costa,
A. Morley-Davies, H.E. Stanley, L. Glass, Phys. Rev. E 66, 031901
(2002).
A Model
for Cardio-Respiratory Synchronization
in Humans,
K. Kotani, K. Takamasu, Y. Ashkenazy, H.E. Stanley, Y. Yamamoto,
Phys. Rev. E 65, 051923 (2002).
Characterization
of Sleep Stages by Correlations
of Heartbeat
Increments,
J.W. Kantelhardt, Y. Ashkenazy, P.Ch. Ivanov, A. Bunde, S. Havlin,
T. Penzel, J.-H. Peter, H.E. Stanley, Phys. Rev. E 65, 051908 (2002).
Delay-Induce
Chaos with Multifractal
Attractor in a Traffic Flow Model,
L.A. Safonov, E. Tomer, V.V. Strygin, Y. Ashkenazy, and S. Havlin,
Europhysics Lett. 57, 151-158 (2002).
A
Stochastic Model of Human Gait
Dynamics,
Y. Ashkenazy, J.M. Hausdorff, P.Ch. Ivanov, H.E. Stanley,
Physica A 316, 662-670 (2002).
Chaotic
Enhancement of Decay. The Effect of
Classical Phase Space
Structures
Y. Ashkenazy, L Bonci, J. Levitan, and R. Roncaglia, Phys. Rev. E 64,
056215 (2001).
Noise
Effects on the Complex Patterns of Abnormal
Heartbeats,
V. Schulte-Frohlinde, Y. Ashkenazy, P.Ch. Ivanov, L. Glass,
A.L. Goldberger, H.E. Stanley , Phys. Rev. Lett. 87, 068104 (2001).
Magnitude
and Sign Correlations in Heartbeat
Fluctuations,
Y. Ashkenazy, P.Ch. Ivanov, S. Havlin, C.-K. Peng, A.L. Goldberger,
and
H.E. Stanley, Phys. Rev. Lett. 86, 1900-1903 (2001).
See also Physics-Central
story
Scale
Specific and Scale Independent
Measures of Heart Rate Variability
as
Risk Indicators,
Y. Ashkenazy, M. Lewkowicz, J. Levitan, S. Havlin, K. Saermark,
H. Moelgaard, P.E. Bloch Thomsen, M. Moller, U. Hintze, and H. Huikuri,
Europhysics Lett. 53, 709-715 (2001).
Calculation
of Energy Spectrum
and Eigenstates of 1D Time-Independent
Short
Range Potentials
Y. Ashkenazy and L.P. Horwitz, Physica A 293, 189-199 (2001).
Chaos
and Maps in Relativistic Dynamics
Systems,
L.P. Horwitz and Y. Ashkenazy, Discrete Dynamics in Nature and
Society 4, 77-86 (2000).
The
Effect of Radiation on the Stochastic
Web,
Y. Ashkenazy and L.P. Horwitz, Discrete Dynamics in Nature and
Society 4, 283-292 (2000).
Fourier
Analysis of Light
Scattered by Elongated Scatterers.
Z. Schiffer, Y. Ashkenazy, R. Tirosh, and M. Deutsch
Applied Optics 38, 3626 (1999).
Discrimination
between Healthy and
Sick Cardiac Autonomic Nervous System by
Detrended
Heart Rate Variability
Analysis
Y. Ashkenazy, M. Lewkowicz, J. Levitan, S. Havlin,
K. Saermark, H. Moelgaard, and A. Bloch Thomsen
Fractals 7, 85 (1999).
The
Use of Generalized Information
Dimension in Measuring Fractal Dimension
of
Time Series
Y. Ashkenazy
Physica A 271, 427-447 (1999).
Discrimination
of the Healthy and
Sick Cardiac Autonomic Nervous System by a
New
Wavelet Analysis of Heartbeat
Y. Ashkenazy, M. Lewkowicz, J. Levitan,
H. Moelgaard, A. Bloch Thomsen and K. Saermark
Fractals 6, (1998) 197-203.
Chaos
of the Relativistic Forced
van der Pol Oscillator
Y. Ashkenazy, C. Goren and L. P. Horwitz
Phys. Lett. A 243, (1998) 195-204.
A
New Time-Scale for Tunnelling
E. Eisenberg and Y. Ashkenazy
Found. Phys. 27, 191 (1997).
Enhancement of Decoherence by Chaotic-Like Behaviour
J. Levitan, M. Lewkowicz and Y. Ashkenazy
Found. Phys. 27, 203 (1997).
Complexity,
Tunnelling and Geometrical
Symmetry
L. P. Horwitz, J. Levitan and Y. Ashkenazy
Phys. Rev. E 55, 3697 (1997).
The
Necessity for a Time Local
Dimension in Systems with
Time-Varying
Attractors
K. Saermark, Y. Ashkenazy, J. Levitan and M. Lewkowicz
Physica A 236, 363 (1997).
Chaotic
Signatures in the Spectrum
of a Quantum Double Well
R. Berkovits, Y. Ashkenazy, L. P. Horwitz, and J. Levitan
Physica A 238, 279 (1997).
Chaoticlike
Behaviour in a Quantum System
without Classical
Counterpart
Y. Ashkenazy, L. P. Horwitz, J. Levitan, M. Lewkowicz, and Y.
Rothschild
Phys. Rev. Lett. 75, 1070 (1995).
Proceedings
Statistical Properties of Commodity Price Fluctuations,
K. Matia, Y. Ashkenazy, L. A. N. Amaral, S. P. Goodwin, and H. E. Stanley,
in Proceedings of the Second Nikkei Econophysics Research Workshop and
Symposium, Tokyo, 12-14 November 2002, edited by H. Takayasu
(Springer-Verlag, Berlin, 2004), pp. 192-197.
Chaos and multifractality in a time-delay car-following traffic model,
L.A. Safonov, E. Tomer, V.V. Strygin, Y. Ashkenazy, S. Havlin, (Editors:
M. Fukui, Y. Sugiyama, M. Schreckenberg, and D.E. Wolf)
Traffic and Granular flow', 119-124 (2003). 4th International Conference on
Traffic and Granular Flow Nagoya Univ., Nagoya, Japan, Oct. 15-17,
2001
Nonlinear Volatility of river flux fluctuations,
V.N. Livina, Y. Ashkenazy, A. Bunde,
S. Havlin, Bulletin of the Israel Physical Society 49, 46 (2003).
A
stochastic model of river discharge fluctuations,
V.N. Livina, Y. Ashkenazy, Z. Kizner, V. Strygind, A. Bunde,
S. Havlin, Physica A 330, 283-290 (2003).
Quantifying heartbeat dynamics by magnitude and sign correlations
P.Ch. Ivanov, Y. Ashkenazy, J.W. Kantelhardt, and H.E. Stanley, AIP
Conf. Proc., 665, 383-391 (2003).
When
Human Walking Becomes Random
Walking: Fractal Analysis and Modeling
of
Gait Rhythm Fluctuations,
J.M. Hausdorff, Y. Ashkenazy, C.-K. Peng, P.Ch. Ivanov, H.E. Stanley,
and A.L. Goldberger, Physica A 302, 138-147 (2001).
Decomposition
of Heartbeat Time
Series: Scaling Analysis of the Sign
Sequence,
Y. Ashkenazy, P.Ch. Ivanov, S. Havlin, C.-K. Peng, Y. Yamamoto,
A.L. Goldberger, and H.E. Stanley, Computers in Cardiology 2000;
27:139-143.
Finding
Hidden Patterns in Complex
Ventriculer Ectopy,
V. Schulte-Frohlinde, Y. Ashkenazy, P.Ch. Ivanov, A. Morley-Davies,
L. Glass, A.L. Goldberger, and H.E. Stanley, Computers in Cardiology
2000; 27:335-339.
Application
of Statistical Physics
to Heartbeat Diagnosis,
S. Havlin, L.A.N. Amaral, Y. Ashkenazy, A.L. Goldberger, P.Ch. Ivanov,
C.-K. Peng, and H.E. Stanley, Physica A 274, 99 (1999).
Chaos and Decoherence in a Quantum System with a Regular
Classical Counterpart
Y. Ashkenazy, M. Lewkowicz and J. Levitan
in : New Developments on Fundamental Problems in Quantum Physics,
eds. M. Ferrero and A. van der Merwe,
(Kluwer Academic Publishers, Dordrecht, 1997).
Submitted papers
Ocean circulation
under globally glaciated Snowball Earth conditions: steady
state solutions
Y. Ashkenazy, H. Gildor, M. Losch, E. Tziperman,
submitted to Journal of Physical Oceanography.
The dominant imprint of Rossby waves in the climate network
Y. Wang, A. Gozolchiani, Y. Ashkenazy, Y. Berezin, O. Guez, and S. Havlin,
submitted to Physical Review Letters.
The effect of wind
and precipitation on vegetation and biogenic crust dynamics in the
Sde-Hallamish sand dunes
R. Amir, S. Kinast, H. Tsoar, H. Yizhaq, E. Zaady, and Y. Ashkenazy,
submitted to Journal of Geophysical Research.
The role of sea ice in the temperature-precipitation feedback
Ilit Shlezak, Hezi Gildor, and Y. Ashkenazy, submitted to Environmental
Research Letters.
Misc
PhD Thesis: The
Quantum-Classical Relation Through Chaos Theory, (1999).
Relation between
Magnitude Series
Correlations and Multifractal Spectrum Width, cond-mat/0111396.