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A Descriptive Analysis of the Morphology and Movement of the Golden Gate Sand Waves

High-resolution bathymetric surveys are interpreted to describe the morphology and movement of a field of sand waves near San Francisco, CA, USA. The sand wave size, shape, orientation, and migration are described. Portions of the field are nearly two dimensional, but the overall field is three dimensional, with changes in sand wave size, orientation, and structure. The trough-to-crest height of individual sand waves ranges from 2 to 9 m. There are a range of wavelengths and orientations. The dominant wavelength ranges from 90 to 100 m, and the orientation clusters around two directions: 40 and 68 degrees. The field is found to be highly dynamic but with stable characteristics over at least decadal timescales. A previously demonstrated paradox between sand wave shape asymmetry and migration direction is revisited using new measurements, showing that reversals in shape asymmetry were accompanied by changes in crest migration direction in one of seven surveys.

Ketersediaan
#
Perpustakaan BIG (Eksternal Harddisk) 550
414
Tersedia
Informasi Detail
Judul Seri
Geosciences
No. Panggil
550
Penerbit
Switzerland : MPDI.,
Deskripsi Fisik
16 hlm PDF, 2.870 KB
Bahasa
Inggris
ISBN/ISSN
2076-3263
Klasifikasi
550
Tipe Isi
text
Tipe Media
-
Tipe Pembawa
online resource
Edisi
Vol.15, Issue 3, March 2025
Subjek
sand wave
bedform
coastal processes
Info Detail Spesifik
Geosciences
Pernyataan Tanggungjawab
Versi lain/terkait

Tidak tersedia versi lain

Lampiran Berkas
  • A Descriptive Analysis of the Morphology and Movement of the Golden Gate Sand Waves
    High-resolution bathymetric surveys are interpreted to describe the morphology and movement of a field of sand waves near San Francisco, CA, USA. The sand wave size, shape, orientation, and migration are described. Portions of the field are nearly two dimensional, but the overall field is three dimensional, with changes in sand wave size, orientation, and structure. The trough-to-crest height of individual sand waves ranges from 2 to 9 m. There are a range of wavelengths and orientations. The dominant wavelength ranges from 90 to 100 m, and the orientation clusters around two directions: 40 and 68 degrees. The field is found to be highly dynamic but with stable characteristics over at least decadal timescales. A previously demonstrated paradox between sand wave shape asymmetry and migration direction is revisited using new measurements, showing that reversals in shape asymmetry were accompanied by changes in crest migration direction in one of seven surveys.
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