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Title: Global distribution of seamounts from ship-track bathymetry data
Authors: Hillier, John K.
Watts, A.B.
Keywords: Seamout
Volcanism
Bathymetry
Issue Date: 2007
Publisher: Wiley-Blackwell © American Geophysical Union
Citation: HILLIER, J.K., WATTS, A.B., 2007. Global distribution of seamounts from ship-track bathymetry data. Geophysical Research Letters, 34 (13), 5pp.
Abstract: The distribution of submarine volcanoes, or seamounts, reflects melting within the Earth and how the magma generated ascends through the overlying lithosphere. Globally (±60° latitude), we use bathymetry data acquired along 39.5 × 106 km of ship tracks to find 201,055 probable seamounts, an order of magnitude more than previous counts across a wider height-range (0.1 < h < 6.7 km). In the North Pacific, seamounts' spatial distribution substantially reflects ridge-crest conditions, variable on timescales of 10 s of Ma and along-ridge distances of ∼1,000 km, rather than intra-plate hot-spot related volcanic activity. In the Atlantic, volcano numbers decrease, somewhat counter-intuitively, towards Iceland suggesting that abundant under-ridge melt may deter the formation of isolated volcanoes. Neither previously used empirical curve (exponential or power-law) describes the true size-frequency distribution of seamounts. Nevertheless, we predict 39 ± 1 × 103 large seamounts (h > 1 km), implying that ∼24,000 (60%) remain to be discovered.
Description: This article was published in the journal, Geophysical Research Letters [© American Geophysical Union].
Version: Published
DOI: 10.1029/2007GL029874
URI: https://dspace.lboro.ac.uk/2134/13044
Publisher Link: http://dx.doi.org/10.1029/2007GL029874
ISSN: 0094-8276
Appears in Collections:Published Articles (Geography)

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