The Digital Dahlen Papers

Digitized copies of research and class notes of F. A. Dahlen

See also The Dahlen Notebooks


We begin, quite modestly, with some loose-leaf course notes found among the Dahlen papers.

A coherent course, possibly: Introductory Geophysics
Gravitational field of Earth and shape of Earth [1-10]. Doppler measurements and extrasolar planets [1-4]. The inertia tensor [1-7]. The external gravitational potential of Earth [1-6]. Precession of the equinoxes [7-9]. Centrifugal potential and the geoid [1-10, 14a-17]. The hydrostatic ellipsoid [1-16]. 00001.pdf
Heat flow at the Earth's surface [1-8]. Thermal evolution of the oceanic lithosphere [1-12]. Isostatic geoid anomalies over the oceanic lithosphere [1-30]. 00002.pdf
Seismology: introduction [1-13]. Anelasticity and damping of seismic waves [1-9]. Seismic body waves [1-24]. Seismic ray theory in spherical Earth [1-5]. The ray parameter [1-8]. The forward problem of body wave seismology [1-28]. 00003.pdf

GEO552, taught between 2000 and 2007, possibly: Theoretical Seismology
2000—"Sketchy Lecture Notes"
Lecture #1 [1-3]. Lecture #2 [1-2]. Lecture #3 [1-2]. Elastic 3-D Earth. Conservation of energy. Rayleigh's principle. Excitation [1-10]. Energy flux. Lecture #4 Normal modes [1-6]. Lecture #6. Eisner's paradox. Applications of Rayleigh's principle [1-4]. [Lecture] Spheroidal and toroidal modes. [Lecture] Distributions [1-3]. [Lecture] Point source model of an earthquake [1-5]. An example of the bfdc-clvd decomposition. Class #9. Stress glut. Double couple. Moment tensor. Radiation pattern. Centroid Moment tensor [1-10]. Class #10. Eulerian vs Lagrangian [1-9]. 00004.pdf
2007—Part I
Small oscillations [1-2]. Local energy conservation law [1-9]. Day 2 review [1 3]. Rayleigh's principle [10-12]. Violin string [1-5]. Class #3 [1-2] 4th lecture [1]. 5th class [1-2]. Rayleigh's principle [1-14]. Local energy conservation law. 00005.pdf
2007—Part II
Free Oscillations and Surface Waves [1-3]. Hamilton's principle [4-9]. Green's tensor [10-11]. Response to a transient force [12-14]. Rayleigh-Ritz method [14.1-14.4]. Seismic source representation [15-18]. Moment tensor [19]. Earthquake fault source [20-30]. Anelasticity and Attenuation [31-33]. Harmonic variations [34-35]. Energy dissipation and [the frequency-dependent quality factor] [36-37]. Relaxation spectrum [38-45]. Attenuation of normal modes [46-48]. Normal modes of a SNREI Earth [49-63]. Mode-ray duality [64-73]. Asymptotic toroidal eigenfunctions [73-74]. Normal mode excitation on a SNREI Earth [86-91]. Decomposition into travelling surface waves [92-106]. 00006.pdf
2007—Part III
Spherical harmonics [152-256]. 00007.pdf
2007—A loose note
Plane wave, bulk and shear modulus. PKIKP mode. Radial mode: homogeneous sphere. 00008.pdf

GEO225, as taught between 1996 and 2004: Earth, the physical environment
[Lecture] Population growth [1-18] 00009.pdf
[Handout] Population growth 00010.pdf
[Lecture] Maximum sustainable population [1-14] 00011.pdf
[Handout] Maximum sustainable population 00012.pdf
[Lecture] Fossil fuels [1-20] 00013.pdf
[Handout] Fossil fuels 00014.pdf
[Lecture] Temperature of the Earth. The greenhouse effect [1-17] 00015.pdf
[Handout] Earth's surface temperature 00016.pdf
[Lecture] Global warming [1-18] 00017.pdf
[Handout] Global warming 00018.pdf
[Lecture] Alternative energy sources [1-33] 00019.pdf
[Handout] Alternative energy sources 00020.pdf
Miscellany 00021.pdf

Earthquake hazard 00022.pdf
Stream discharge 00023.pdf
Lectures on tides 00024.pdf

GEO225, as taught around the turn of the century, possibly: Fundamentals of Solid Earth Science
Organization 00036.pdf
Lecture #1. Earth — Third rock from the Sun [1-21] 00037.pdf
Bulk composition of the Earth [1-15] 00038.pdf
Nucleosynthesis — The origin of the elements [1-19] 00039.pdf
Minerals — The building blocks of rocks [1-13] 00040.pdf
Diamonds are a girl's best friends 00041.pdf
The age of the Earth — NOT! 00042.pdf
Radioactive decay — Carbon dating 00043.pdf
K-Ar and Rb-Sr geochronology — The age of the Earth 00044.pdf
Heat flow 00045.pdf
The oceanic lithosphere 00046.pdf
Earthquakes and earth structure 00047.pdf
Seismometry and earthquake locations(s) 00048.pdf
Week 5 Lecture #3. Earthquake focal mechanisms(s) [1-10] 00049.pdf
Plate tectonics 00050.pdf

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