Item talk:Q247084
From geokb
{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "CreativeWork", "additionalType": "Conference Paper", "name": "ADV point measurements within rapids of the Colorado River in Grand Canyon", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70216708", "url": "https://pubs.usgs.gov/publication/70216708" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70216708 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1061/40856(200)158", "url": "https://doi.org/10.1061/40856(200)158" } ], "inLanguage": "en", "datePublished": "2006", "dateModified": "2020-12-02", "abstract": "Rapids on the Colorado River in Grand Canyon attract over 20,000 white-water enthusiasts a year and are considered one of the premiere collections of rapids in North America. While this collection of rapids is an important recreational resource, relatively little is known of the specific hydraulics of individual rapids. Flow measurements are occasionally made in the low-velocity reaches between rapids, but the turbulent and dangerous nature of rapids makes in-situ data collection challenging. The present study measured hydraulics within a small rapid in Grand Canyon as well as an alluvial reach of the Colorado River in Glen Canyon using a Sontek Argonaut acoustic Doppler velocimeter (ADV)2. The ADV was mounted near the center-front of a motor-powered 19-foot J-snout boat; the instrument sample volume was located 80 cm below the surface. The quality of the measurements was best in the slower water above the rapid and in Glen Canyon. Waves, aeration, and high-velocity water rendered specific measurements in the core of the rapid difficult as the ADV instrument could only measure velocities less than about 3.0 m/s. Nonetheless, velocity, bathymetry, and water-surface maps were constructed for the rapid and the reach in Glen Canyon. The compiled data sets can be used for predicting the erosion potential of debris fans forming the rapid and the development of numerical models to better characterize rapids.", "description": "10 p.", "publisher": { "@type": "Organization", "name": "American Society of Civil Engineers" }, "author": [ { "@type": "Person", "name": "Magirl, Christopher S. magirl@usgs.gov", "givenName": "Christopher S.", "familyName": "Magirl", "email": "magirl@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-9922-6549", "url": "https://orcid.org/0000-0002-9922-6549" }, "affiliation": [ { "@type": "Organization", "name": "Washington Water Science Center", "url": "https://www.usgs.gov/centers/washington-water-science-center" }, { "@type": "Organization", "name": "Arizona Water Science Center", "url": "https://www.usgs.gov/centers/arizona-water-science-center" } ] }, { "@type": "Person", "name": "Griffiths, Peter G. pggriffi@usgs.gov", "givenName": "Peter G.", "familyName": "Griffiths", "email": "pggriffi@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-8663-8907", "url": "https://orcid.org/0000-0002-8663-8907" } }, { "@type": "Person", "name": "Webb, Robert rhwebb@usgs.gov", "givenName": "Robert", "familyName": "Webb", "email": "rhwebb@usgs.gov" } ], "funder": [ { "@type": "Organization", "name": "Rocky Mountain Regional Office", "url": "https://www.usgs.gov/regions/rocky-mountain" } ], "spatialCoverage": [ { "@type": "Place", "additionalType": "country", "name": "United States", "url": "https://geonames.org/4074035" }, { "@type": "Place", "additionalType": "state", "name": "Colorado" }, { "@type": "Place", "additionalType": "unknown", "name": "Colorado River", "url": "https://geonames.org/4682632" }, { "@type": "Place", "additionalType": "unknown", "name": "Grand Canyon", "url": "https://geonames.org/4239673" }, { "@type": "Place", "geo": [ { "@type": "GeoShape", "additionalProperty": { 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187, 211 ], "are": [ 16, 51 ], "considered": [ 17 ], "one": [ 18 ], "of": [ 19, 23, 31, 42, 46, 66, 91, 113, 132, 159, 205, 214 ], "premiere": [ 21 ], "collections": [ 22 ], "rapids": [ 24, 32, 67 ], "North": [ 26 ], "America.": [ 27 ], "While": [ 28 ], "this": [ 29 ], "collection": [ 30, 71 ], "is": [ 33, 40 ], "an": [ 34, 88 ], "important": [ 35 ], "recreational": [ 36 ], "resource,": [ 37 ], "relatively": [ 38 ], "little": [ 39 ], "known": [ 41 ], "specific": [ 44, 154 ], "hydraulics": [ 45, 77 ], "individual": [ 47 ], "rapids.": [ 48, 220 ], "Flow": [ 49 ], "measurements": [ 50, 134, 155 ], "occasionally": [ 52 ], "made": [ 53 ], "low-velocity": [ 56 ], "reaches": [ 57 ], "between": [ 58 ], "rapids,": [ 59 ], "but": [ 60 ], "turbulent": [ 62 ], "dangerous": [ 64 ], "nature": [ 65 ], "makes": [ 68 ], "in-situ": [ 69 ], "data": [ 70, 195 ], "challenging.": [ 72 ], "The": [ 73, 106, 130, 193 ], "present": [ 74 ], "study": [ 75 ], "measured": [ 76 ], "within": [ 78 ], "small": [ 80 ], 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