georefid:2008-073290SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2008-073290<gco:CharacterString>Power law relation of bathymetry and gravity roughness with age of oceanic crust below Ninety East Ridge</gco:CharacterString>2007-01-01publicationgeorefid:2008-073290Bansal, Abhey RamNational Geophysical Research Institute, Hyderabad, IndiaauthorCouncil of Scientific & Industrial Research, New Delhi, IndiapublisherdocumentHardcopyIn: Dimri, V. P. (editor), Fractals in marine sciences36 (2)105-109In this study altimeter gravity and ship track bathymetry data from National Geophysical Data Center (NGDC) is explored to investigate the relation between roughness of gravity and bathymetry data to the age of oceanic crust over 90 degrees E Ridge. The gravity and bathymetry profiles are selected over the ridge at places of known ages from Deep Sea Drilling Project (DSDP) and Ocean Drilling Program (ODP). The gravity and bathymetry data are gridded at sampling interval of 1' 12" and profiles are extracted on the DSDP and ODP sites. The roughness of gravity and bathymetry data is computed as the square root of the average squared deviation about a linear trend. The roughness varies as a power -1.31 and -1.59 of age for bathymetry and gravity data. The mean fractal dimension is found to be 1.54 and 1.46 for bathymetry and gravity data. The roughness of bathymetry and gravity data varies with age with different power law. It is also interesting to note that the roughness of bathymetry decreased with age, which indicates modification of bathymetry data in the older (northern) portion of the ridge with continuous depositions of Bengal fan sediments.completedOceanographySolid-earth geophysicsagebathymetrycrustDeep Sea Drilling ProjectDSDP Site 214DSDP Site 216DSDP Site 217DSDP Site 253fractalsgravity fieldIndian OceanLeg 121Leg 22Leg 26Ninetyeast RidgeOcean Drilling Programocean floorsoceanic crustODP Site 756ODP Site 757ODP Site 758power lawremote sensingroughnesssatellite methodsspatial variationsspectraurn:org.iodp:exp:121urnlargerWorkCitationcampaignurn:org.iodp:exp:22urnlargerWorkCitationcampaignurn:org.iodp:exp:26urnlargerWorkCitationcampaignurn:org.iodp:exp:22:site:214urnlargerWorkCitationstudyurn:org.iodp:exp:22urnlargerWorkCitationcampaignurn:org.iodp:exp:22:site:216urnlargerWorkCitationstudyurn:org.iodp:exp:22urnlargerWorkCitationcampaignurn:org.iodp:exp:22:site:217urnlargerWorkCitationstudyurn:org.iodp:exp:22urnlargerWorkCitationcampaignurn:org.iodp:exp:26:site:253urnlargerWorkCitationstudyurn:org.iodp:exp:26urnlargerWorkCitationcampaignurn:org.iodp:exp:121:site:756urnlargerWorkCitationstudyurn:org.iodp:exp:121urnlargerWorkCitationcampaignurn:org.iodp:exp:121:site:757urnlargerWorkCitationstudyurn:org.iodp:exp:121urnlargerWorkCitationcampaignurn:org.iodp:exp:121:site:758urnlargerWorkCitationstudyurn:org.iodp:exp:121urnlargerWorkCitationcampaignEnglishgeoscientificInformation80.000090.0000-10.000010.0000