Wave and Current Data from Southeast Oahu, Hawaii during August - September 2005 (NODC Accession 0051075)

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Kent K. Hathaway, U.S. Army Engineer Research and Development Center
Originator: Stan Boc, U.S. Army Engineer Research and Development Center
Publication_Date: Unknown
Title:
Wave and Current Data from Southeast Oahu, Hawaii during August - September 2005 (NODC Accession 0051075)
Online_Linkage: https://www.ncei.noaa.gov/archive/accession/0051075
Description:
Abstract:
Field data collection was conducted for the U.S. Army Engineer District, Pacific Ocean, Honolulu (POH), during August 9 - September 14, 2005, off Kailua, Lanikai, and Waimanalo, Oahu, Hawaii. Wave and current data were collected at five fixed locations using bottom-mounted RD Instruments Workhorse, 1.2 MHz, ADCPs (Acoustic Doppler Current Profilers) and Sontek Hydra ADVs (Acoustic Doppler Velocimeters). The ADCPs include wave measurements.

Four inexpensive current drogues (drifters) were designed and built at the CHL Field Research Facility (FRF) that used GPS tracking and radio telemetry for positioning. Deployments were made on 10 August and 13 September. June.

Purpose:
Learn of current and wave patterns in the bay for design considerations.
Supplemental_Information:
Entry_ID Unknown Sensor_Name Teledyne RD Instruments 1200 kHz Workhorse moored ADCP Sensor_Name Sontek Hydra ADVs (Acoustic Doppler Velocimeters) Sensor_Name CHL Field Research Facility drogue drifters Source_Name moorings Project_Campaign: US Army Corp. of Engineers Regional Field Study Storage_Medium ASCII, Matlab, MS Word Reference None Online_size: 231756 kbytes

Resource Description: NODC Accession Number 0051075

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050809
Ending_Date: 20050914
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None Planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -157.71798
East_Bounding_Coordinate: -157.67976
North_Bounding_Coordinate: 21.398416
South_Bounding_Coordinate: 21.329912
Keywords:
Theme:
Theme_Keyword_Thesaurus: NCEI Geoportal Filter
Theme_Keyword: CoRIS_Metadata
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: physical data
Theme_Keyword: coastal data
Theme_Keyword: coral reef ecosystems
Theme_Keyword: u-component current velocity
Theme_Keyword: v-component current velocity
Theme_Keyword: w-component current velocity
Theme_Keyword: current speed
Theme_Keyword: current direction
Theme_Keyword: acoustic backscatter
Theme_Keyword: temperature
Theme_Keyword: depth
Theme_Keyword: wave height
Theme_Keyword: wave direction
Theme_Keyword: wave dominant period
Theme_Keyword: wave spectrum
Theme_Keyword: wave directional spectrum
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Numeric Data Sets > Oceanography
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Waves > Wave Height
Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Waves > Wave Direction
Theme_Keyword: EARTH SCIENCE > Oceans > Ocean Waves > Wave Period
Theme_Keyword: EARTH SCIENCE > Oceans > Tides > Tidal Currents
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: 014
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Pacific Ocean
Place_Keyword: Hawaiian Islands
Place_Keyword: Oahu
Place_Keyword: Southeast Oahu
Place_Keyword: Kailua
Place_Keyword: Lanikai
Place_Keyword: Waimanalo
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: MHI
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003)
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: water column, surface to 5 m
Access_Constraints: None
Use_Constraints: Dataset credit required
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Kent K. Hathaway
Contact_Organization:
Coastal and Hydraulics Laboratory, Field Research Facility, USACE
Contact_Position: Research Oceanographer
Contact_Address:
Address_Type: mailing and physical
Address: U.S. Army Engineer Research and Development Center
Address: 1261 Duck Road
City: Kitty Hawk
State_or_Province: NC
Postal_Code: 27949
Country: USA
Contact_Voice_Telephone: (252) 261-6840 (x224)
Contact_Facsimile_Telephone: (252) 261-4432
Contact_Electronic_Mail_Address: Kent.K.Hathaway@usace.army.mil
Data_Set_Credit:
Coastal and Hydraulics Laboratory, Field Research Facility POH District of the U.S. Army Engineer Research and Development Center

ACKNOWLEDGEMENTS: The field data collection was performed for the U.S. Army Engineer District, Pacific Ocean, Honolulu (CEPOH) with support from the U.S. Army Engineer Research and Development Center (ERDC), Coastal and Hydraulics Laboratory's (CHL) Field Research Facility (FRF).

Native_Data_Set_Environment: ASCII, Matlab, MS Word

Data_Quality_Information:
Logical_Consistency_Report: see Process Step
Completeness_Report: The sets were 100% complete
Lineage:
Process_Step:
Process_Description:
ADCP Gauges: The ADCP gauges were RD Instruments 1200 kHz Workhorse, bottom mounted facing upward with the sensor head approximately 0.4 m off the bottom. Figure 2 (report) shows the custom built mount that was held to the bottom with about 80 lbs of lead weight. These gauges have four acoustic transducers for measuring currents and a pressure sensor, from which horizontal and vertical current profiles were computed at 0.2 m vertical spacing. These units sampled at 2 Hz for directional wave measurements. Each hourly wave burst was approximately 34 minute long, starting at the top of each hour, and consisted of 4096 points. There is a 0.44 m blanking distance from the transducer head, and with a 0.2 m bin width this makes the first sample 0.72 m past the transducer, or about 1.12 m off the bottom. Current profiles were collected every 10 minutes from a 200 point average.

Deployments were on 9 Aug 2005 and retrieved on 14 Sep 2005. ADCP-2 was reprogrammed on 10 Aug so collection started a day later, and the batteries were depleted on 4 Sep, about 10 days before retrieval of the other gages.

ADV Gauges: The three ADV gages were the Sontek's Hydra model that sample a single point current velocity (U, V, and W) and contained an external pressure sensor. The instrument frame and ADV transducer are shown in Figure 3 ( report, after gauge retrieval). The sample volume for the current measurement is approximately 1-2 cm in size and about 0.17 m from the center transducer. This unit uses three beams to determine the three current components.

Current Drogues: Four inexpensive current drogues (drifters) were designed and built at the CHL Field Research Facility (FRF) that used GPS tracking and radio telemetry for positioning. They were constructed with off the shelf plumbing supplies (PVC pipe, vertical risers, rubber unions, hose clamps), a Garmin Geko GPS receivers, and MaxStream (model XStream-PKG-R) radio modems (Figure 4, report). The sails had about a one meter cross-section. The lower vertical PCV pipe (submerged) contained the modem and batteries, the upper horizontal pipe contained the GPS receiver and radio antennas. A NEMA GPS data string was transmitted once per second and the Garmin GCP unit internally recorded positions every 30 seconds. These GPS units are WAAS enabled and should have a horizontal accuracy of about 3 m. The radio tracking was partially successful- it required line of sight which was not possible to simultaneously receive drifters in the Kailua and Waimanalo Bays. Also the antennas and connectors should be more robust, two broke during deployment.

INSTRUMENT TYPES: RD Instruments Workhorse ADCPs (Acoustic Doppler Current Profilers) Sontek Hydra ADVs (Acoustic Doppler Velocimeters) current drogues (drifters)

REFERENCES: Similar instruments and procedures are described in: Hathaway, K. K and S. Boc, 2008. Field Data Collection Study Final Report: Natatorium Current Study, Waikiki, HI. U.S. Army Engineering POH District, Honolulu, HI., ERDC/CHL TR-08. 55p.

Process_Date: Unknown
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Kent K. Hathaway
Contact_Organization:
Coastal and Hydraulics Laboratory, Field Research Facility, USACE
Contact_Position: Research Oceanographer
Contact_Address:
Address_Type: mailing and physical
Address: U.S. Army Engineer Research and Development Center
Address: 1261 Duck Road
City: Kitty Hawk
State_or_Province: NC
Postal_Code: 27949
Country: USA
Contact_Voice_Telephone: (252) 261-6840 (x224)
Contact_Facsimile_Telephone: (252) 261-4432
Contact_Electronic_Mail_Address: Kent.K.Hathaway@usace.army.mil

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
DIRECTORY ORGANIZATION, FILE NAMES AND FORMATS:

Note: all times are in UTC

within ../data/

0-data/ : This directory contains the original set of directories and files 1-data/ : Directories and files prepared by NODC (such files are prepared if original formats are non-proprietary)

Contents of 0-data/: Directory SoutheastOahu_FieldData/adcp1/

Files: HI010adc.20050809_20050914.meta HI010adc.sum.20050809_20050916.txt Comment: Deployment summaries from instrument configuration files.

File: HI010adc_vac_2005_mm.txt (mm=month, ie, 08, 09) Comment: Vertically averaged current (VAC) by month. Uave = positive going eastward (mm/s), Vave = positive going north (mm/s).

file: readAdcpDSpec.m comment: Matlab code snippet to read directional wave spectra files (DSpec/).

subdirectory: adcp1/Dspec comment: Wave directional spectra files (reformatted) from RDI WavesMon program. One file for each hour. See the Matlab code snippet readAdcpDSpec.m. Units are m^2/Hz/Deg.

subdirectory adcp1/Fspec comment: Non-directional ADCP spectra, one file each hour Filename example: VSPspec.HIAD1.200508092100.UTC.asc This example is for 09 Aug 2005 at 2100 UTC.

Format: Columnar ASCII spectra from ADCP Velocity, Surface, and Pressure (VSP). Energy units are m^2/Hz/Deg, And frequency is in Hz.

subdirectory adcp1/Stats comment: wave and current statistics files by month (08=Aug, 09=Sep)

file: HI010adc_cur_2005_mm_pfl.mat comment: (by month, mm) Matlab format current profile data Variables: Uave1 = vertically averaged east current (mm/s) Vave1 = vertically averaged north current (mm/s) Ux1 = east current profile (cm/s) Vx1= north current profile (cm/s) depth = nominal depth of center of each bin stime = Matlab time format ASCII text files of all parameters in ../data/1-data/SoutheastOahu_FieldData/adcp1/Stats

file: HI010adc_wmo_2005_mm_UTC.txt comment: (by month, mm) Wave and current profiles, file by month, mm, columnar ASCII, one line per wave collection, space delimited. Format follows: Burst# YY MM DD HH mm ss cc Hs(m) Tp(s) Dp(deg) Depth(mm) Hmax(m) Tmean(s) bins depthlevel1Magnitude(m/s) depthlevel1Direction(deg) depthlevelNMagnitude(m/s) depthlevelNDirection(deg) Symbols: YY Year MM Month DD Day HH Hour mm Minute ss Second cc 1/100ths seconds Hs Significant Wave Height = 4*sqrt(area under the power spectrum) Tp Peak period = Wave period associated with the largest peak in the power spectrum Dp Peak Direction = peak direction at the peak period.

subdirectory adcp2/ See explanation for filenames, directory names, and formats in adcp1/

subdirectory advData/ Processed ADV files. Files listed below are for ADV-1, there are similar files for ADV-2 and 3. The ADV wave data from ViewHydra was suspect and has been removed from the dataset use adv_??.curWave.txt files (?? = y1, g2, and r3).

file: README.advFormat comment: summary of formats for files on this directory

file: adv_??config.txt comment: configuration files

file: adv_??.curWave.txt comment: Wave and curent stats with some QC data (where ?? = Gauge ID: y1, g2, or r3) See README.advFormat for details

subdirectory advData/spec comment: Columnar ASCII spectra files, one per collection per gauge (see README.advFormat).

subdirectory drogue/ comment: GPS drogue (drifter) data, 10 Aug and 13 Sep.

file: gpsNmmm.dat comment: N: track number of the drogue mmm: month (Aug or Sep); for example, gps1Aug.dat is for track-1 on 10 Aug.

columnar ASCII, with UTC time, latitude and longitude minutes (from Lat 21 degrees N and Lon 157 degrees W), drogue speed (m/s) and direction going towards (degrees positive clockwise from north).

Entity_and_Attribute_Detail_Citation: None

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA/NESDIS/National Oceanographic Data Center
Contact_Person: Data Access Group, User Services Team
Contact_Address:
Address_Type: mailing and physical
Address: SSMC-3 Fourth Floor
Address: 1315 East West Highway
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910-3282
Country: USA
Contact_Voice_Telephone: 301-713-3277
Contact_Facsimile_Telephone: 301-713-3302
Contact_Electronic_Mail_Address: NODC.Services@noaa.gov
Hours_of_Service: 8am-5pm, Monday through Friday
Resource_Description: Downloadable Data
Distribution_Liability:
NOAA makes no warranty regarding these data,expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA, NESDIS, NODC and NCDDC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: MatLab
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://www.ncei.noaa.gov/archive/accession/0051075
Fees:
Prices vary depending on data set, output medium and ordering mechanism. A standard handling charge, with additional costs for special handling, may be added to the basic cost of the data.
Ordering_Instructions:
Prepayment by check, money order or bank card is required. Orders may be placed via fax, email, regular mail, telephone or via the NNDC Online Store.

Metadata_Reference_Information:
Metadata_Date: 20210106
Metadata_Review_Date: 20110805
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mr. Patrick C. Caldwell
Contact_Organization: NOAA/NESDIS/NODC/NCDDC
Contact_Position: Hawaii/US Pacific Liaison
Contact_Address:
Address_Type: mailing
Address: 1000 Pope Road, MSB 316
Address: Dept. of Oceanography
Address: University of Hawaii at Manoa
City: Honolulu
State_or_Province: Hawaii
Postal_Code: 96822
Country: USA
Contact_Voice_Telephone: (808)-956-4105
Contact_Facsimile_Telephone: (808) 956-2352
Contact_Electronic_Mail_Address: caldwell@hawaii.edu
Hours_of_Service: 8 AM to 5 PM weekdays
Contact_Instructions: check services@nodc.noaa.gov if not available
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

CoRIS:
CoRIS_ID: 20100111061712
CoRIS_Children: None
CoRIS_Beginning_Date: 20050809
CoRIS_Ending_Date: 20050914
CoRIS_Metadata_Link:
https://www.coris.noaa.gov/metadata/records/html/fgdcmetadata_0051075.html
CoRIS_Tracking_ID: 4423

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