Data/hora: 27/07/2024 02:44:52

Provedor de dados: 	Institutional Archive of Ifreme (ArchiMer)	
País: 	France	
Título: 	Seamount abundances and abyssal hill morphology on the eastern flank of the East Pacific Rise at 14 degrees S	
Autores: 	Grevemeyer, I; Renard, Vincent; Jennrich, C; Weigel, W.	
Data: 	1997-08	
Ano: 	1997	
Resumo: 	Bathymetric data from a Hydrosweep multibeam sonar survey of a 720 km long tectonic corridor on the east flank of the southern EPR at 14 degrees 14'S covered about 25,000 km(2) of zero-age to 8.5 m.y. old crust (magnetic anomaly 4A). In this corridor we document a strong correlation of robust along flowline changes in abyssal hill morphology and seamount size distribution with spreading rate changes deduced from our magnetic data. Indeed, we find that both rms height of abyssal hills and abundance and height of seamounts increase significantly as spreading rate changes from similar to 75 mm/yr to over 85 mm/yr (half rate). Moreover, we identified 46 seamounts taller than 100 m. Previous studies on the southern EPR reported a larger density of seamounts, organized primarily in chains. Our investigation, however, revealed seamounts not associated with major chains, leading us to the conclusion that different forms of off-axis volcanism occur along the spreading center.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00336/44682/45035.pdf

DOI:10.1029/97GL01820

http://archimer.ifremer.fr/doc/00336/44682/	
Editor: 	Amer Geophysical Union	
Formato: 	application/pdf	
Fonte: 	Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 1997-08 , Vol. 24 , N. 15 , P. 1955-1958	
Fonte: 	1997 by the American Geophysical Union.

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