Wave-Induced Transport. Example: Acoustic Streaming.

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Presentation transcript:

Wave-Induced Transport

Example: Acoustic Streaming

Acoustic Streaming (Quartz Wind) I (Lenoir & Botton 2007)

Acoustic Streaming (Quartz Wind) II (Lenoir & Botton 2007)

Physics of Acoustic Streaming (Eckart 1948; Lighthill 1978)

Solar Atmospheric & Internal Structure (NASA/ESA 2006)

Surface & Internal Rotation (Thompson et al. 2003)

Solar Magnetism (Arlt 2003) (Dikpati 2010)

The Sun (7/2/10)

Ideal Magnetohydrodynamics I

Ideal Magnetohydrodynamics II

Alfvén Waves I

Alfvén Waves II

Solar Coronal Temperature & Density (Meyer-Vernet 2007)

Necessity of Coronal Expansion

Observed Solar Wind Speed Ulysses ( ) (McComas et al. 2003)

Solar Wind Properties (Hansteen 2009)

Constraints on Acceleration Mechanisms (Leer & Holzer 1980)

Alfvén Waves in the Solar Wind Mariner 5 (Venus 1967) (Belcher & Davis 1971)

Alfvén Waves in the Solar Corona (Tomczyk et al. 2007)

Alfvén Waves in the Chromosphere Solar Optical Telescope – Hinode (McIntosh et al. 2010) Spicules

Alfvén Wave-Driven Wind Model

Wave Amplitudes in a Steady Flow

Wave-Modified Thermally Driven Wind

Wave Amplitudes

Wave Energy Flux

Wind Force Balance

Winds with Non-WKB Alfvén Waves I

Winds with Non-WKB Alfvén Waves II

Winds with Non-WKB Alfvén Waves III

Gravity Waves I

Gravity Waves II

Gravity Wave Propagation I

Gravity Wave Propagation II (Mowbray & Rarity 1967)

Gravity Wave Excitation I Ice-Water Convection Experiment (Malkus 1960; Townsend 1964; Adrian 1975) (M. MacGregor 2004)

Gravity Wave Excitation II (Townsend 1964)

Gravity Wave Excitation III (Ansong & Sutherland 2010)

Gravity Wave Excitation IV (Rogers & Glatzmaier 2005; Rempel 2004)

Gravity Wave - Shear Flow Interaction

The Quasi-Biennial Oscillation (Baldwin et al. 2001)

The Plumb-McEwan Experiment (1978)

Gravity Wave-Driven Flows Wave Interactions with Tachocline Rotational Shear

Oscillatory Flow Properties

Origin of Oscillatory Behavior

Time-Dependent Flow Properties (Thompson et al. 2003)

Gravity Waves & Internal Solar Rotation I Interaction of Waves with Non-uniform Rotation

Gravity Waves & Internal Solar Rotation II (Talon, Kumar, & Zahn 2002)

Conclusion/Extensions Interactions between small-scale waves and the media through which they propagate can have large-scale dynamical consequences in a variety of astrophysical systems Wave-dominated flows – winds from cool evolved stars Radiative amplification of acoustic/Alfvén waves in hot star winds Accretion-generated Alfvén/gravity waves in pre-MS objects Internal excitation of gravity modes by planetary companions Alfvén waves from satellite-planet, planet-star interactions Some examples/possibilities: