Item talk:Q60383
From geokb
{
"USGS Publications Warehouse": { "schema": { "@context": "https://schema.org", "@type": "CreativeWork", "additionalType": "USGS Numbered Series", "name": "A brief test of the Hewlett-Packard MEMS seismic accelerometer", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "ofr20141047", "url": "https://pubs.usgs.gov/publication/ofr20141047" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70098414 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.3133/ofr20141047", "url": "https://doi.org/10.3133/ofr20141047" } ], "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Open-File Report" } ], "datePublished": "2014", "dateModified": "2014-04-09", "abstract": "Testing was performed on a prototype of Hewlett-Packard (HP) Micro-Electro-Mechanical Systems (MEMS) seismic accelerometer at the U.S. Geological Survey\u2019s Albuquerque Seismological Laboratory. This prototype was built using discrete electronic components. The self-noise level was measured during low seismic background conditions and found to be 9.8 ng/\u221aHz at periods below 0.2 s (frequencies above 5 Hz). The six-second microseism noise was also discernible. The HP MEMS accelerometer was compared to a Geotech Model GS-13 reference seismometer during seismic noise and signal levels well above the self-noise of the accelerometer. Matching power spectral densities (corrected for accelerometer and seismometer responses to represent true ground motion) indicated that the HP MEMS accelerometer has a flat (constant) response to acceleration from 0.0125 Hz to at least 62.5 Hz. Tilt calibrations of the HP MEMS accelerometer verified that the flat response to acceleration extends to 0 Hz.\n\nFuture development of the HP MEMS accelerometer includes replacing the discreet electronic boards with a low power application-specific integrated circuit (ASIC) and increasing the dynamic range of the sensor to detect strong motion signals above one gravitational acceleration, while maintaining the self-noise observed during these tests.", "description": "iv, 18 p.", "publisher": { "@type": "Organization", "name": "U.S. Geological Survey" }, "author": [ { "@type": "Person", "name": "Hutt, Charles R. bhutt@usgs.gov", "givenName": "Charles R.", "familyName": "Hutt", "email": "bhutt@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-9033-9195", "url": "https://orcid.org/0000-0001-9033-9195" }, "affiliation": [ { "@type": "Organization", "name": "Geologic Hazards Science Center", "url": "https://www.usgs.gov/centers/geologic-hazards-science-center" } ] }, { "@type": "Person", "name": "Homeijer, Brian D.", "givenName": "Brian D.", "familyName": "Homeijer" }, { "@type": "Person", "name": "Milligan, Donald J.", "givenName": "Donald J.", "familyName": "Milligan" } ], "funder": [ { "@type": "Organization", "name": "Geologic Hazards Science Center", "url": "https://www.usgs.gov/centers/geologic-hazards-science-center" } ], "spatialCoverage": [ { "@type": "Place", "additionalType": "country", "name": "United States", "url": "https://geonames.org/4074035" } ] } }, "OpenAlex": { "abstract_inverted_index": { "Testing": [ 0 ], "was": [ 1, 24, 33, 59, 66 ], "performed": [ 2 ], "on": [ 3 ], "a": [ 4, 69, 110, 156 ], "prototype": [ 5, 23 ], "of": [ 6, 85, 126, 144, 168 ], "Hewlett-Packard": [ 7 ], "(HP)": [ 8 ], "Micro-Electro-Mechanical": [ 9 ], "Systems": [ 10 ], "(MEMS)": [ 11 ], "seismic": [ 12, 37, 76 ], "accelerometer": [ 13, 65, 94, 108, 130, 148 ], "at": [ 14, 46, 120 ], "the": [ 15, 83, 86, 105, 127, 133, 145, 151, 165, 169, 182 ], "U.S.": [ 16 ], "Geological": [ 17 ], "Survey\u2019s": [ 18 ], "Albuquerque": [ 19 ], "Seismological": [ 20 ], "Laboratory.": [ 21 ], "This": [ 22 ], "built": [ 25 ], "using": [ 26 ], "discrete": [ 27 ], "electronic": [ 28, 153 ], "components.": [ 29 ], "The": [ 30, 55, 62 ], "self-noise": [ 31, 84, 183 ], "level": [ 32 ], "measured": [ 34 ], "during": [ 35, 75, 185 ], "low": [ 36, 157 ], "background": [ 38 ], "conditions": [ 39 ], "and": [ 40, 78, 95, 163 ], "found": [ 41 ], "to": [ 42, 68, 98, 114, 119, 136, 139, 171 ], "be": [ 43 ], "9.8": [ 44 ], "ng/\u221aHz": [ 45 ], "periods": [ 47 ], "below": [ 48 ], "0.2": [ 49 ], "s": [ 50 ], "(frequencies": [ 51 ], "above": [ 52, 82, 176 ], "5": [ 53 ], "Hz).": [ 54 ], "six-second": [ 56 ], "microseism": [ 57 ], "noise": [ 58, 77 ], "also": [ 60 ], "discernible.": [ 61 ], "HP": [ 63, 106, 128, 146 ], "MEMS": [ 64, 107, 129, 147 ], "compared": [ 67 ], "Geotech": [ 70 ], "Model": [ 71 ], "GS-13": [ 72 ], "reference": [ 73 ], "seismometer": [ 74, 96 ], "signal": [ 79 ], "levels": [ 80 ], "well": [ 81 ], "accelerometer.": [ 87 ], "Matching": [ 88 ], "power": [ 89, 158 ], "spectral": [ 90 ], "densities": [ 91 ], "(corrected": [ 92 ], "for": [ 93 ], "responses": [ 97 ], "represent": [ 99 ], "true": [ 100 ], "ground": [ 101 ], "motion)": [ 102 ], "indicated": [ 103 ], "that": [ 104, 132 ], "has": [ 109 ], "flat": [ 111, 134 ], "(constant)": [ 112 ], "response": [ 113, 135 ], "acceleration": [ 115, 137 ], "from": [ 116 ], "0.0125": [ 117 ], "Hz": [ 118 ], "least": [ 121 ], "62.5": [ 122 ], "Hz.": [ 123, 141 ], "Tilt": [ 124 ], "calibrations": [ 125 ], "verified": [ 131 ], "extends": [ 138 ], "0": [ 140 ], "Future": [ 142 ], "development": [ 143 ], "includes": [ 149 ], "replacing": [ 150 ], "discreet": [ 152 ], "boards": [ 154 ], "with": [ 155 ], "application-specific": [ 159 ], "integrated": [ 160 ], "circuit": [ 161 ], "(ASIC)": [ 162 ], "increasing": [ 164 ], "dynamic": [ 166 ], "range": [ 167 ], "sensor": [ 170 ], "detect": [ 172 ], "strong": [ 173 ], "motion": [ 174 ], "signals": [ 175 ], "one": [ 177 ], "gravitational": [ 178 ], "acceleration,": [ 179 ], "while": [ 180 ], "maintaining": [ 181 ], "observed": [ 184 ], "these": [ 186 ], "tests.": [ 187 ] }, "apc_list": null, "apc_paid": null, "authorships": [ { "author_position": "first", "author": { "id": "https://openalex.org/A5091420734", "display_name": "Brian Homeijer", "orcid": null }, "institutions": [ { "id": "https://openalex.org/I1286329397", "display_name": "United States Geological Survey", "ror": "https://ror.org/035a68863", "country_code": "US", "type": "government", "lineage": [ "https://openalex.org/I1286329397", "https://openalex.org/I1335927249" ] } ], "countries": [ "US" ], "is_corresponding": false, "raw_author_name": "Brian D. 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