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(NMMR Metadata gov.noaa.ngdc.dart_bpr:AK85_1998)
Metadata: Identification Information: Dataset Identifier: gov.noaa.ngdc.dart_bpr:AK85_1998 Citation: Citation Information: Originator: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Publication Date: 20060421 Title: BPR Data for AK85 19980516 to 19990513 Online Linkage: http://www.ngdc.noaa.gov/seg/hazard/DARTData.shtml CI Online Resource: Linkage: http://www.ngdc.noaa.gov/seg/hazard/DARTData.shtml Protocol: http Name: Historic DART/BPR Data On-line Description: Data access to historic DART/BPR data obtained from PMEL and NDBC. Function: search Description: Abstract: During 1982-1985, PMEL engaged in the development of a reliable deep-ocean Bottom Pressure Recorder (BPR) to collect high-quality deep-water data during a tsunami. In 1986, NOAA initiated a long-term field program in the northeast Pacific and the program was expanded in 1987 to include shallow-water BPR sites maintained and operated by the United States Army Corps of Engineers along the United States west coast and Hawaii. The Pacific Tsunami Observation Program (PacTOP) included five permanent deep-ocean observational sites in the northeast Pacific Ocean to monitor the seismically active Alaska-Aleutian Seismic Zone because of the potential threat to United States coastal regions. During the mid-90's, the individual BPR package is now part of a real-time tsunami detection package, the Deep-ocean Assessment and Reporting of Tsunamis (DART). The National Geophysical Data Center (NGDC) serves as the archive center for this data and provides the historical data to users. Purpose: Provide historic pressure and temperature data Documentation: Science Paper: Citation Information: Originator: M.C. Eble Originator: F.I. Gonzalez Originator: D.M. Mattens Originator: H.B. Milburn Publication Date: 198908 Title: Instrumentation, Field Operations, and Data Processing for PMEL Deep Ocean Bottom Pressure Measurements Series Information: Series name: NOAA Technical Memorandum Issue Identification: ERL PMEL-89 Publication Information: Publication Place: Seattle, WA Publisher: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Science Paper: Citation Information: Originator: M.C. Eble Originator: F.I. Gonzalez Publication Date: 19901010 Title: Deep-Ocean Botton Pressure Measurements in the Northeast Pacific Series Information: Series name: Journal of Atmospheric and Oceanic Technology Issue Identification: Vol. 8, No. 2, pp. 221-233 Supplemental Information: The Bottom Pressure Recorder dataset consists of over 70 BPR's deployed in: a triangular array in close proximity to the Shumigan Seismic Gap; near the landward slope of the Aleutian Trench, off the United States Pacific Northwest coast, and off the coast of Hawaii. Time Period of Content: Time Period Information: Range of Dates/Times: Beginning Date: 19980516 Beginning Time: 010000 Ending Date: 19990513 Ending Time: 130000 Currentness Reference: ground condition Status: Progress: Complete Maintenance and Update Frequency: None planned Spatial Domain: Bounding Coordinates: West Bounding Coordinate: -158.7503 East Bounding Coordinate: -158.7503 North Bounding Coordinate: 52.038 South Bounding Coordinate: 52.038 Keywords: Theme: Theme Keyword Thesaurus: ISO 19115 Topic Category Theme Keyword: geoscientificInformation Theme Keyword: oceans Theme: Theme Keyword Thesaurus: NASA/GCMD Earth Science Keywords Theme Keyword: Earth Science > Oceans > Coastal Processes > Tidal Height Theme Keyword: Earth Science > Oceans > Ocean Waves > Tsunamis Theme Keyword: Earth Science > Oceans > Tides > Tidal Height Platform and Instrument Identification: Mission Name: Deep-ocean Assessment and Reporting of Tsunamis (DART) Platform Full Name: Bottom Pressure Recorder Platform Short Name: BPR Instrument Full Name: Paroscientific model 410K-017 digiquartz pressure transducer Instrument Short Name: Paroscientific pressure transducer - ID 53345 Access Constraints: None Use Constraints: None Point of Contact: Contact Information: Contact Organization Primary: Contact Organization: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Contact Person: Marie Eble Contact Address: Address Type: mailing and physical Address: 7600 SAND POINT WAY, NE City: Seattle State or Province: WA Postal Code: 98115 Country: USA Contact Voice Telephone: (206)526-6805 Contact Electronic Mail Address: marie.c.eble@noaa.gov Aggregation Information: Container Packet ID: Dataset Identifier: gov.noaa.ngdc:G10068 Data Quality Information: Logical Consistency Report: None Completeness Report: None Lineage: Source Information: Source Citation: Citation Information: Originator: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Originator: F.I. Gonzalez Originator: D.M. Mattens Originator: H.B. Milburn Publication Date: 198908 Title: Historic Bottom Pressure Recorder (BPR) Data Series Information: Series name: NOAA Technical Memorandum Issue Identification: ERL PMEL-89 Publication Information: Publication Place: Seattle, WA Publisher: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Type of Source Media: paper Source Time Period of Content: Time Period Information: Range of Dates/Times: Beginning Date: 19831019 Ending Date: 20020719 Source Currentness Reference: publication date Source Citation Abbreviation: Eble et al. 1989 Source Contribution: Processing steps for BPR data after recovered. Source Information: Source Citation: Citation Information: Originator: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Publication Date: 20050901 Title: Historic Bottom Pressure Recorder (BPR) Data Type of Source Media: CD-ROM Source Time Period of Content: Time Period Information: Range of Dates/Times: Beginning Date: 19980516 Beginning Time: 010000 Ending Date: 19990513 Ending Time: 130000 Source Currentness Reference: ground condition Source Citation Abbreviation: AK85-ed Source Contribution: ASCII .dat file of historic edited data from AK85 Process Step: Process Description: Early processing of the data can be found in Eble et al., 1989. Source Used Citation Abbreviation: Eble et al. 1989 Process Date: Unknown Process Contact: Contact Information: Contact Organization Primary: Contact Organization: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Contact Person: Marie Eble Contact Address: Address Type: mailing and physical Address: 7600 SAND POINT WAY, NE City: Seattle State or Province: WA Postal Code: 98115 Country: USA Contact Voice Telephone: (206)526-6805 Contact Electronic Mail Address: marie.c.eble@noaa.gov Process Step: Process Description: Received edited data Source Used Citation Abbreviation: AK85-ed Process Date: 20050902 Process Contact: Contact Information: Contact Organization Primary: Contact Organization: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Contact Person: Kelly Stroker Contact Address: Address Type: Mailing and Physical Address Address: NOAA/NESDIS/NGDC E/GC1 325 Broadway City: Boulder State or Province: CO Postal Code: 80305-3328 Country: USA Contact Voice Telephone: (303) 497-4603 Contact TDD/TTY Telephone: (303) 497-6958 Contact Facsimile Telephone: (303) 497-6513 Contact Electronic Mail Address: kelly.stroker@noaa.gov Hours of Service: 7:30-5:00 Mountain Contact Instructions: Contact Data Center Entity and Attribute Information: Detailed Description: Entity Type: Entity Type Label: Bottom Pressure Recorder Entity Type Definition: An acoustic modem, acoustic release unit and battery pack bolted to a platform, to which a disposable anchor, flotation, and recovery aids are attached Entity Type Definition Source: http://nctr.pmel.noaa.gov/Dart/dart_bmoor.html Attribute: Attribute Label: Depth Attribute Definition: The ship-measured depth (meters) of the ocean at which the buoy was moored. The ship-measured depth is not as accurate as the BPR-measured pressure. To obtain the most precise depth, convert the bottom pressure to depth. If value is 99999, depth is unknown. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Range Domain: Range Domain Minimum: 4754 Range Domain Maximum: 4754 Attribute Units of Measure: meters Attribute: Attribute Label: Latitude Attribute Definition: Latitude is measured from the equator, with positive values going north and negative values going south. Attribute Definition Source: NASA Attribute Domain Values: Range Domain: Range Domain Minimum: 52 02.28 Range Domain Maximum: 52 02.28 Attribute Units of Measure: degree minutes Attribute: Attribute Label: Longitude Attribute Definition: Longitude is measured from the Prime Meridian (which is the longitude that runs through Greenwich, England), with positive values going east and negative values going west. Attribute Definition Source: NASA Attribute Domain Values: Range Domain: Range Domain Minimum: 158 45.02 Range Domain Maximum: 158 45.02 Attribute Units of Measure: degree minutes Attribute: Attribute Label: Latitude Attribute Definition: Latitude is measured from the equator, with positive values going north and negative values going south. Attribute Definition Source: NASA Attribute Domain Values: Range Domain: Range Domain Minimum: 52.038 Range Domain Maximum: 52.038 Attribute Units of Measure: decimal degrees Attribute: Attribute Label: Longitude Attribute Definition: Longitude is measured from the Prime Meridian (which is the longitude that runs through Greenwich, England), with positive values going east and negative values going west. Attribute Definition Source: NASA Attribute Domain Values: Range Domain: Range Domain Minimum: -158.7503 Range Domain Maximum: -158.7503 Attribute Units of Measure: decimal degrees Attribute: Attribute Label: Paros_ducer Attribute Definition: Paros transducer - measure change in water pressure above it. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 53345 Enumerated Domain Value Definition: Serial Number of the Paros transducer Enumerated Domain Value Definition Source: None. Attribute: Attribute Label: Board Attribute Definition: Number that the engineers came up with for the electronic boards. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 2 Enumerated Domain Value Definition: Board Number. If = 999, then board number not applicable, never existed or not recorded for this time. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Osc Attribute Definition: Time measurement. NA = no time bases on the early models. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 2 Enumerated Domain Value Definition: N/A or NULL indicates early models. There was time bases on the early models. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Deployment_UTC Attribute Definition: Time (Coordinated Universal Time) that the gauge was deployed overboard Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 2300 Enumerated Domain Value Definition: Coordinated Universal Time - if value = 9999, UTC is unknown. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Deployment_JD Attribute Definition: Calendar date that the instrument was deployed. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 135 Enumerated Domain Value Definition: Julian day - if value = 999, exact deploy date is unknown. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Deployment Date Attribute Definition: YYYYMMDD of deployment of BPR Package. The attribute may be left with only YYYY, if the month and day are unknown, or YYYYMM if the day is unknown. The value may be null. Attribute Definition Source: None Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 19980515 Enumerated Domain Value Definition: YYYYMMDD Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Recovered Attribute Definition: Indicates if the BPR Package was recovered from the seafloor. Attribute Definition Source: None Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: YES Enumerated Domain Value Definition: None Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Recovery_UTC Attribute Definition: Time (Coordinated Universal Time) that the gauge was recovered. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 1315 Enumerated Domain Value Definition: Coordinated Universal Time - if value = 9999, UTC is unknown. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Recovery_jd Attribute Definition: Calendar date that the instrument was recovered. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 133 Enumerated Domain Value Definition: Julian Day - if value = 999, exact recovery date is unknown. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Recovery_date Attribute Definition: YYYYMMDD of recovery of BPR Package. The attribute may be left with only YYYY, if the month and day are unknown, or YYYYMM if the day is unknown. The value may be null. Attribute Definition Source: None Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 19990513 Enumerated Domain Value Definition: YYYYMMDD - if value = 99999, exact recovery date is unknown. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Sample_rate Attribute Definition: This is the period, in seconds, at which the buoy makes a measurement. Usually it is 15 seconds, but for the older buoys it is 56.25 seconds. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Range Domain: Range Domain Minimum: 15 Range Domain Maximum: 15 Attribute Units of Measure: Minutes Attribute: Attribute Label: Base Attribute Definition: None Attribute Definition Source: None Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 7000 Enumerated Domain Value Definition: If base = 99999, then it is not applicable. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Temp_corr Attribute Definition: Temperature correction. In the later years, the engineers designed an MTR (mini temperature recorder) independant of the Paros Transducer measurement, which has a little lag. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 999 Enumerated Domain Value Definition: If value = 999, MTR was not used. Enumerated Domain Value Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute: Attribute Label: Clock_drift Attribute Definition: A check of the clock before the unit goes down and after it comes back up. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 999 Enumerated Domain Value Definition: if value = 999, technician did not record value. Enumerated Domain Value Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute: Attribute Label: TR Pre Attribute Definition: Measurement of drift Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: 0.476836726 Enumerated Domain Value Definition: None Enumerated Domain Value Definition Source: None Attribute: Attribute Label: TR Post Attribute Definition: Measurement of drift Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: NULL Enumerated Domain Value Definition: None Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Location Attribute Definition: The location where the buoy was located. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: Unknown Enumerated Domain Value Definition: N/A - if location information is not known. Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Data_Qual Attribute Definition: Quality of the data collected. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: No quality information available Enumerated Domain Value Definition: None Enumerated Domain Value Definition Source: None Attribute: Attribute Label: Comments Attribute Definition: Comments on the recovery of the BPR package or the data collected. Attribute Definition Source: None Attribute Domain Values: Unrepresentable Domain: No further information Attribute: Attribute Label: Deployment Platform Attribute Definition: Abbreviation of ship name that was used to deploy the BPR package. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: MF Enumerated Domain Value Definition: Ship name and cruise number. Enumerated Domain Value Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute: Attribute Label: Recovery Platform Attribute Definition: Abbreviation of ship name that was used to recover the BPR package. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Enumerated Domain: Enumerated Domain Value: Unknown Enumerated Domain Value Definition: Ship name and cruise number, if NULL - unit not recovered. Enumerated Domain Value Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute: Attribute Label: Pressure Attribute Definition: Edited Pressure [PSIA], pressure in pounds per square inch absolute Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Range Domain: Range Domain Minimum: 7030.62932 Range Domain Maximum: 7035.00991 Attribute Units of Measure: psia Attribute: Attribute Label: Temperature Attribute Definition: Edited Temperature [C] , temperature in Celsius. Attribute Definition Source: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce Attribute Domain Values: Range Domain: Range Domain Minimum: 1.70004 Range Domain Maximum: 1.7322 Attribute Units of Measure: Celcius Distribution Information: Distributor: Contact Information: Contact Organization Primary: Contact Organization: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Contact Person: Kelly Stroker Contact Address: Address Type: Mailing and Physical Address Address: NOAA/NESDIS/NGDC E/GC1 325 Broadway City: Boulder State or Province: CO Postal Code: 80305-3328 Country: USA Contact Voice Telephone: (303) 497-4603 Contact TDD/TTY Telephone: (303) 497-6958 Contact Facsimile Telephone: (303) 497-6513 Contact Electronic Mail Address: kelly.stroker@noaa.gov Hours of Service: 7:30-5:00 Mountain Contact Instructions: Contact Data Center Resource Description: Live Data and Maps Distribution Liability: Disclaimer While every effort has been made to ensure that t hese data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Standard Order Process: Digital Form: Digital Transfer Information: Format Name: ASCII Digital Transfer Option: Online Option: Computer Contact Information: Network Address: Network Resource Name: http://www.ngdc.noaa.gov/seg/hazard/DARTData.shtml CI Online Resource: Linkage: http://www.ngdc.noaa.gov/seg/hazard/DARTData.shtml Protocol: http Name: Historic DART/BPR Data On-line Description: Data access to historic DART/BPR data obtained from PMEL and NDBC. Function: search Fees: free for online download Metadata Reference Information: Metadata Date: 20070808 Metadata Contact: Contact Information: Contact Organization Primary: Contact Organization: DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Contact Person: Kelly Stroker Contact Address: Address Type: Mailing and Physical Address Address: NOAA/NESDIS/NGDC E/GC1 325 Broadway City: Boulder State or Province: CO Postal Code: 80305-3328 Country: USA Contact Voice Telephone: (303) 497-4603 Contact TDD/TTY Telephone: (303) 497-6958 Contact Facsimile Telephone: (303) 497-6513 Contact Electronic Mail Address: kelly.stroker@noaa.gov Hours of Service: 7:30-5:00 Mountain Contact Instructions: Contact Data Center Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata Metadata Standard Version: FGDC-STD-012-2002 Metadata Extensions: Online Linkage: http://www.ngdc.noaa.gov/metadata/extensions/local_extensions.html Profile Name: NGDC Extensions to FGDC Metadata Platform and Mission Information: Mission Information: Mission Name: Pacific Tsunami Observation Program (PacTOP) Mission Description: Mitigate hazard to Hawaii, California, Oregon, Washington, and Alaska. Mission History: Mission Start Date: Single Date/Time: Calendar Date: Unknown Mission Significant Event: Process Step: Process Description: Transducers have been incorporated into pressure sensor units designed for oceanic application. Source Used Citation Abbreviation: BPR Process Date: Unknown Mission Complete Date: Single Date/Time: Calendar Date: Unknown Platform Information: Platform Full Name: Bottom Pressure Recorder Platform Start Date: Single Date/Time: Calendar Date: 19980515 Time of Day: 2300 Platform Sponsor: NOAA's Pacific Marine Environmental Laboratory (PMEL) Platform Description: High-quality bottom pressure recorder (BPR) measurement collect data during a tsunami. Instrument Information: Instrument Full Name: Paroscientific model 410K-017 digiquartz pressure transducer. ID 53345 Instrument Description: Instrument Type: Pressure Sensor Operational Mode: Vibrational Collection Type: Changes in pressure Other Collector Description: None Instrument Properties Description: None Instrument Information: Instrument Full Name: Yellow Spring International Model 44032 thermistor Instrument Description: Instrument Type: Temperature Sensor Collection Type: Temperature Other Collector Description: None Instrument Properties Description: Range -4.3 to 34.0 C. Accuracy to 0.07 C Instrument Information: Instrument Full Name: Multimode quartz crystal oscillator Instrument Description: Instrument Type: Time base Operational Mode: 2.097152 MHz Collection Type: Time Other Collector Description: None Instrument Properties Description: Stable 0.1 ppm degrees 1/C, 1 ppm 1/yr