{"@context":{"content":"http://purl.org/rss/1.0/modules/content/","dc":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","og":"http://ogp.me/ns#","rdfs":"http://www.w3.org/2000/01/rdf-schema#","sioc":"http://rdfs.org/sioc/ns#","sioct":"http://rdfs.org/sioc/types#","skos":"http://www.w3.org/2004/02/skos/core#","xsd":"http://www.w3.org/2001/XMLSchema#","owl":"http://www.w3.org/2002/07/owl#","rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","rss":"http://purl.org/rss/1.0/","site":"https://www.bco-dmo.org/ns#","odo":"http://ocean-data.org/schema/","emo":"http://ocean-data.org/schema/entity-matching#","bibo":"http://purl.org/ontology/bibo/","crypto":"http://id.loc.gov/vocabulary/preservation/cryptographicHashFunctions/","bcodmo":"http://lod.bco-dmo.org/id/","tw":"http://tw.rpi.edu/schema/","dcat":"http://www.w3.org/ns/dcat#","time":"http://www.w3.org/2006/time#","geo":"http://www.w3.org/2003/01/geo/wgs84_pos#","geosparql":"http://www.opengis.net/ont/geosparql#","sf":"http://www.opengis.net/ont/sf#","void":"http://rdfs.org/ns/void#","sd":"http://www.w3.org/ns/sparql-service-description#","dctype":"http://purl.org/dc/dcmitype/","prov":"http://www.w3.org/ns/prov#","schema":"http://schema.org/","geolink":"http://schema.geolink.org/1.0/base/main#","spdx":"http://spdx.org/rdf/terms#","bcodmo_vocab":"http://schema.bco-dmo.org/"},"@id":"http://lod.bco-dmo.org/id/dataset/2392#graph","@graph":[{"http://lod.bco-dmo.org/id/dataset/2392":{"@id":"http://lod.bco-dmo.org/id/dataset/2392","@type":["http://ocean-data.org/schema/DeploymentDatasetCollection","http://www.w3.org/ns/dcat#Dataset","http://ocean-data.org/schema/Dataset"],"http://ocean-data.org/schema/hasBriefDescription":[{"@value":"AL9801 acoustic backscatter relative decibels, Georges Bank, 1998","@language":"en-US"}],"http://purl.org/dc/terms/description":[{"@value":"
These relative decibel values are the result of processing the AL9801 Greene Bomber volume backscatter at 120KHz. They are relative decibel values derived from the backscatter data (in volts) and normalized according to the algorithms in the Matlab routine docurtainnf.m. The algorithm includes the following steps:
\nThese are energy backscattering values.
\nThe values are presented as twenty groups of 20 numbers in each group. Each number is displayed as NNN, where there is an assumed decimal point at NN.N and all values should be negated. That is NNN, is really -NN.N.
\nSee related objects:
\ncp_depths:\u00a0https://www.bco-dmo.org/dataset/2393
\ncp_lat_lon:\u00a0https://www.bco-dmo.org/dataset/2394