Author: Mitchell PetersPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Sea Refractions
Author: Mitchell PetersNarrative of the United States Exploring Expedition
Author: Charles WilkesPublisher:
ISBN:
Category : Antarctica
Languages : en
Pages : 676
Book Description
Ocean Seismo-Acoustics
Author: T. AkalPublisher: Springer Science & Business Media
ISBN: 1461322014
Category : Science
Languages : en
Pages : 898
Book Description
Seafloor investigation has long been a feature of not only seismology but also of acoustics. Indeed it was acoustics that produced depth sounders, giving us the first capability of producing both global and local maps of the seafloor. Subsequently, better instrumentation and techniques led to a clearer, more quantitative picture of the seabed itself, which stimulated new hypotheses such as seafloor spreading through the availability of more reliable data on sediment thickness over ocean basins and other bottom features. Geologists and geophysicists have used both acoustic and seismic methods to study the seabed by considering the propagation of signals arising from both natural seismic events and man-made impulsive sources. Although significant advances have been made in instrumentation, such as long towed geophysical arrays, ai r guns and ocean bot tom seismometers, the pic ture of the seafloor is still far from complete. Underwater acoustics concerns itself today with the phenomena of propagation and noise at frequencies and ranges that require an understanding of acoustic interaction at both of its boundaries, the sea surface and seafloor, over depths ranging from tens to thousands of meters. Much of the earlier higher frequency (>1 kHz) work included the characterization of the seafloor in regimes of reflection coefficients which were empirically derived from surveys. The results of these studies met with only limited success, confined as they were to those areas where survey data existed and lacking a physical understanding of the processes of reflection and scattering.
Sea refractions
Author: Mitchell PetersPublisher:
ISBN:
Category : Music
Languages : en
Pages : 8
Book Description
An unaccompanied marimba solo. Four mallets throughout, with some independent use of each mallet. Playable on a four octave marimba using four mallets. Medium.
Percussionist
Author: United States Exploring Expedition
Author: Professional Paper
Author: The Nautical Almanac and Astronomical Ephemeris for the Year ...
Author: Antarctic Journal of the United States
Author: The Philosophical Transactions of the Royal Society of London, from Their Commencement, in 1665, to the Year 1800; Abridged, with Notes and Biographic Illustrations, by Charles Hutton ... George Shaw ... Richard Pearson ...: 1796-1800. (General index at end of v. 18)
Author: Royal Society (Great Britain)Publisher:
ISBN:
Category : Philosophical transaction (Royal Society (Great Britain))
Languages : en
Pages : 960
Book Description