Item talk:Q245115
From geokb
{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Three-dimensional sensitivity distribution and sample volume of low-induction-number electromagnetic-induction instruments", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70032510", "url": "https://pubs.usgs.gov/publication/70032510" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70032510 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.2136/sssaj2011.0003", "url": "https://doi.org/10.2136/sssaj2011.0003" }, { "@type": "PropertyValue", "propertyID": "ISSN", "value": "03615995" } ], "journal": { "@type": "Periodical", "name": "Soil Science Society of America Journal", "volumeNumber": "76", "issueNumber": "1" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Soil Science Society of America Journal" } ], "datePublished": "2012", "dateModified": "2020-11-30", "abstract": "There is an ongoing effort to improve the understanding of the correlation of soil properties with apparent soil electrical conductivity as measured by low\u2010induction\u2010number electromagnetic\u2010induction (LIN FEM) instruments. At a minimum, the dimensions of LIN FEM instruments' sample volume, the spatial distribution of sensitivity within that volume, and implications for surveying and analyses must be clearly defined and discussed. Therefore, a series of numerical simulations was done in which a conductive perturbation was moved systematically through homogeneous soil to elucidate the three\u2010dimensional sample volume of LIN FEM instruments. For a small perturbation with electrical conductivity similar to that of the soil, instrument response is a measure of local sensitivity (LS). Our results indicate that LS depends strongly on the orientation of the instrument's transmitter and receiver coils and includes regions of both positive and negative LS. Integration of the absolute value of LS from highest to lowest was used to contour cumulative sensitivity (CS). The 90% CS contour was used to define the sample volume. For both horizontal and vertical coplanar coil orientations, the longest dimension of the sample volume was at the surface along the main instrument axis with a length of about four times the intercoil spacing (s) with maximum thicknesses of about 1 and 0.3 s, respectively. The imaged distribution of spatial sensitivity within the sample volume is highly complex and should be considered in conjunction with the expected scale of heterogeneity before the use and interpretation of LIN FEM for mapping and profiling.", "description": "7 p.", "publisher": { "@type": "Organization", "name": "Soil Science Society of America" }, "author": [ { "@type": "Person", "name": "Ferr\u00e9, T.P.A.", "givenName": "T.P.A.", "familyName": "Ferr\u00e9" }, { "@type": "Person", "name": "Groom, R.W.", "givenName": "R.W.", "familyName": "Groom" }, { "@type": "Person", "name": "Callegary, James B. jcallega@usgs.gov", "givenName": "James B.", "familyName": "Callegary", "email": "jcallega@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0003-3604-0517", "url": "https://orcid.org/0000-0003-3604-0517" }, "affiliation": [ { "@type": "Organization", "name": "Arizona Water Science Center", "url": "https://www.usgs.gov/centers/arizona-water-science-center" } ] } ], "funder": [ { "@type": "Organization", "name": "Arizona Water Science Center", "url": "https://www.usgs.gov/centers/arizona-water-science-center" } ] }, "OpenAlex": { "abstract_inverted_index": { "There": [ 0 ], "is": [ 1, 103, 220 ], "an": [ 2 ], "ongoing": [ 3 ], "effort": [ 4 ], "to": [ 5, 78, 96, 145, 149, 160 ], "improve": [ 6 ], "the": [ 7, 10, 31, 39, 80, 99, 118, 121, 138, 162, 173, 177, 182, 185, 196, 217, 230, 236 ], "understanding": [ 8 ], "of": [ 9, 12, 33, 42, 62, 84, 98, 106, 120, 130, 137, 141, 176, 192, 203, 213, 233, 240 ], "correlation": [ 11 ], "soil": [ 13, 17, 77 ], "properties": [ 14 ], "with": [ 15, 92, 189, 200, 229 ], "apparent": [ 16 ], "electrical": [ 18, 93 ], "conductivity": [ 19, 94 ], "as": [ 20 ], "measured": [ 21 ], "by": [ 22 ], "low\u2010induction\u2010number": [ 23 ], "electromagnetic\u2010induction": [ 24 ], "(LIN": [ 25 ], "FEM)": [ 26 ], "instruments.": [ 27, 87 ], "At": [ 28 ], "a": [ 29, 60, 69, 89, 104, 190 ], "minimum,": [ 30 ], "dimensions": [ 32 ], "LIN": [ 34, 85, 241 ], "FEM": [ 35, 86, 242 ], "instruments'": [ 36 ], "sample": [ 37, 82, 163, 178, 218 ], "volume,": [ 38, 46 ], "spatial": [ 40, 214 ], "distribution": [ 41, 212 ], "sensitivity": [ 43, 108, 152, 215 ], "within": [ 44, 216 ], "that": [ 45, 97, 113 ], "and": [ 47, 51, 57, 124, 127, 133, 168, 206, 223, 238, 245 ], "implications": [ 48 ], "for": [ 49, 243 ], "surveying": [ 50 ], "analyses": [ 52 ], "must": [ 53 ], "be": [ 54, 225 ], "clearly": [ 55 ], "defined": [ 56 ], "discussed.": [ 58 ], "Therefore,": [ 59 ], "series": [ 61 ], "numerical": [ 63 ], "simulations": [ 64 ], "was": [ 65, 72, 147, 158, 180 ], "done": [ 66 ], "in": [ 67, 227 ], "which": [ 68 ], "conductive": [ 70 ], "perturbation": [ 71, 91 ], "moved": [ 73 ], "systematically": [ 74 ], "through": [ 75 ], "homogeneous": [ 76 ], "elucidate": [ 79 ], "three\u2010dimensional": [ 81 ], "volume": [ 83, 179, 219 ], "For": [ 88, 165 ], "small": [ 90 ], "similar": [ 95 ], "soil,": [ 100 ], "instrument": [ 101, 187 ], "response": [ 102 ], "measure": [ 105 ], "local": [ 107 ], "(LS).": [ 109 ], "Our": [ 110 ], "results": [ 111 ], "indicate": [ 112 ], "LS": [ 114, 142 ], "depends": [ 115 ], "strongly": [ 116 ], "on": [ 117 ], "orientation": [ 119 ], "instrument's": [ 122 ], "transmitter": [ 123 ], "receiver": [ 125 ], "coils": [ 126 ], "includes": [ 128 ], "regions": [ 129 ], "both": [ 131, 166 ], "positive": [ 132 ], "negative": [ 134 ], "LS.": [ 135 ], "Integration": [ 136 ], "absolute": [ 139 ], "value": [ 140 ], "from": [ 143 ], "highest": [ 144 ], "lowest": [ 146 ], "used": [ 148, 159 ], "contour": [ 150, 157 ], "cumulative": [ 151 ], "(CS).": [ 153 ], "The": [ 154, 210 ], "90%": [ 155 ], "CS": [ 156 ], "define": [ 161 ], "volume.": [ 164 ], "horizontal": [ 167 ], "vertical": [ 169 ], "coplanar": [ 170 ], "coil": [ 171 ], "orientations,": [ 172 ], "longest": [ 174 ], "dimension": [ 175 ], "at": [ 181 ], "surface": [ 183 ], "along": [ 184 ], "main": [ 186 ], "axis": [ 188 ], "length": [ 191 ], "about": [ 193, 204 ], "four": [ 194 ], "times": [ 195 ], "intercoil": [ 197 ], "spacing": [ 198 ], "(s)": [ 199 ], "maximum": [ 201 ], "thicknesses": [ 202 ], "1": [ 205 ], "0.3": [ 207 ], "s,": [ 208 ], "respectively.": [ 209 ], "imaged": [ 211 ], "highly": [ 221 ], "complex": [ 222 ], "should": [ 224 ], "considered": [ 226 ], "conjunction": [ 228 ], "expected": [ 231 ], "scale": [ 232 ], "heterogeneity": [ 234 ], "before": [ 235 ], "use": [ 237 ], "interpretation": [ 239 ], "mapping": [ 244 ], "profiling.": [ 246 ] }, "apc_list": { "value": 1350, "currency": "USD", "value_usd": 1350, "provenance": "doaj" }, "apc_paid": null, "authorships": [ { "author_position": "first", "author": { "id": "https://openalex.org/A5088803083", "display_name": "James B. 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