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Wave-Induced Transport. Example: Acoustic Streaming.

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Presentation on theme: "Wave-Induced Transport. Example: Acoustic Streaming."— Presentation transcript:

1 Wave-Induced Transport

2 Example: Acoustic Streaming

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

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

5 Physics of Acoustic Streaming (Eckart 1948; Lighthill 1978)

6 Solar Atmospheric & Internal Structure (NASA/ESA 2006)

7 Surface & Internal Rotation (Thompson et al. 2003)

8 Solar Magnetism (Arlt 2003) (Dikpati 2010)

9 The Sun (7/2/10)

10 Ideal Magnetohydrodynamics I

11 Ideal Magnetohydrodynamics II

12 Alfvén Waves I

13 Alfvén Waves II

14 Solar Coronal Temperature & Density (Meyer-Vernet 2007)

15 Necessity of Coronal Expansion

16 Observed Solar Wind Speed Ulysses (1992-2009) (McComas et al. 2003)

17 Solar Wind Properties (Hansteen 2009)

18 Constraints on Acceleration Mechanisms (Leer & Holzer 1980)

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

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

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

22 Alfvén Wave-Driven Wind Model

23 Wave Amplitudes in a Steady Flow

24 Wave-Modified Thermally Driven Wind

25 Wave Amplitudes

26 Wave Energy Flux

27 Wind Force Balance

28 Winds with Non-WKB Alfvén Waves I

29 Winds with Non-WKB Alfvén Waves II

30 Winds with Non-WKB Alfvén Waves III

31 Gravity Waves I

32 Gravity Waves II

33 Gravity Wave Propagation I

34 Gravity Wave Propagation II (Mowbray & Rarity 1967)

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

36 Gravity Wave Excitation II (Townsend 1964)

37 Gravity Wave Excitation III (Ansong & Sutherland 2010)

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

39 Gravity Wave - Shear Flow Interaction

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

41 The Plumb-McEwan Experiment (1978)

42 Gravity Wave-Driven Flows Wave Interactions with Tachocline Rotational Shear

43 Oscillatory Flow Properties

44 Origin of Oscillatory Behavior

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

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

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

48 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:


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