A long term project to monitor water quality and sediment processes in Kaneohe Bay was initiated in November 1998 and continued through July 2001. Four primary sites in the bay were chosen which had been used in historical water quality studies. Additional sites were located in feeder streams within a mile of the bay and just offshore in the open ocean.
To better understand the water quality and sediment processes in Kaneohe Bay
NOAASupplemental: Entry_ID: Unknown Sensor_Name: SeaCat, YSI turbidometer, flourometer, Licor cosine PAR sensors, Secchi Disk, gravimeter Source_Name: instrumental and laboratory Project_Campaign: Coastal Intensive Site Network: Long-Term Kaneohe Bay Monitoring Project Originating_Center: University of Hawaii, Hawaii Institute for Marine Biology and Department of Zoology Storage_Medium: MS Excel Online_size: 2035 kbytes Resource Description: NODC Accession Number 0001473
ground condition
Dataset credit required
PO Box 1346
Department of Commerce, National Oceanic and Atmospheric Administration, Environmental Protection Agency, National Aeronautical and Space Administration
see lineage, process step
none
Kaneohe Bay, characterized as "one of the most intensively studied coral reef systems in the world", is located on the windward NE coast of Oahu, Hawaii. The Bay is about 13 km long by 4 km wide with an average depth of about 8 m. The waters of the Bay are protected from the tradewind swell by a "barrier" reef that marks the windward margin of the Bay. This protection allows extensive coral reef development within the Bay. Patch reefs (more than 40) and fringing reefs provide habitat and shelter to coral reef fishes, invertebrates, algae, and seagrasses. Three sites (North Bay (NB), Central Bay (CB), and South Bay (SB), all 12 to 15 m depth) in Kaneohe Bay were selected as close as possible to the sites used during the EPA study of the Bay in the 1970s (Smith et al., 1981). The only change was that the "Outfall" site was dropped as there is no longer sewage discharge at that location. This site was replaced with the Kaneohe Stream (KS) site, near the mouth of the stream in a depth of approximately 2 m. In May 1999, an additional site (MP for Mid-Plume) at 6 m depth was added and replaced the KS site in October 1999. An oceanic site (OCN) just outside the bay in ~30 m depth was also utilized. Approximate positions: NB 21.5000N 157.8167W CB 21.4633N 157.8083W SB 21.4350N 157.7833W MP 21.4100N 157.7925W KS 21.4095N 157.7925W KSM 21.4083N 157.7917W OCN* 21.5167N 157.7450W *not explicit, this site is nominal, refering to offshore locations, exact position data given in the FieldSummary files. A site map is given in file ../../data/plots/cisnet_kaneohe_bay_sites.gif Water column measurements: parameter frequency method temperature two weeks SeaCat conductivity two weeks SeaCat salinity two weeks SeaCat dissovled oxygen two weeks SeaCat turbidity two weeks YSI turbidometer light penetration two weeks Licor cosine PAR sensors, Secchi Surface (0.5 m) samples: parameter frequency method chlorophyll two weeks flourometrically TSS two weeks gravimetrically Dissolved inorganic nutrients two weeks Strickland and Parsons DON, DOP four weeks unconfirmed Particulate C,N four weeks Perken-Elmer
Original files received as spreadsheets (MS Excel) and are found in directory ../../data/excel Files are as follows: 1) High Resolution CTD data - file naming convention CTDssyyyysummary.xls where ss: station ID (NB,CB,SB,MP,OCN), yyyy: year - all sampling days for a given year are in a single page (CTDOCNsummary.xls has all sampling days of all years) - depth (m), Temperature (degrees C), and Salinity (ppt) are given for each sampling day - redundant ASCII copies in directory ../csv/ with the same root name yet extension csv - original files are: CTDCB1999summary.xls CTDCB2000summary.xls CTDCB2001summary.xls CTDMP1999summary.xls CTDMP2000summary.xls CTDMP2001summary.xls CTDNB1999summary.xls CTDNB2000summary.xls CTDNB2001summary.xls CTDSB1999summary.xls CTDSB2000summary.xls CTDSB2001summary.xls CTDOCNsummary.xls 2) Field Survey Data - these files hold weather and sea condition notes, and miscellaneous water quality data, which are also found in other files within this data set. - file naming convention Fieldyysummary.xls where yy: year - all sampling days for a given year are in a single file yet each sampling day is provided in a separate spreadsheet page - redundant ASCII copies of each page of each spreadsheet are found in directory csv/ with the filename as same first part of the root name appended with the date (yymmdd) of sampling followed by the extension, csv. - original files are: Field98summary.xls Field99summary.xls Field00summary.xls Field01summary.xls 3) Total Suspended Solids and Secchi Disk - all sampling days of all years are in a single spreadsheet page - depth (m), TSS (mg/l), secchi (m), and depth extinction coefficient, k, and percent organic (%), are given for each sampling day for each location - redundant ASCII copies in directory ../csv/ with the same root name yet extension csv - a plot is given in ../plots/tss_secchi.gif - original file is: TSSsecchiksummary.xls 4) Chlorophyll-a data - all sampling days of all years are in a single spreadsheet page - mean and standard deviation (sd) of GFF (filter), 2.0um (finer filter) and 0.2um (finest filter) are given. The latter two should add to equal the GFF. - redundant ASCII copies in directory ../csv/ with the same root name yet extension csv - a plot is given in ../plots/chl_time_series_plot.gif - original file is: chlorophyllasummary.xls 5) Dissolved Nutrients - all sampling days of all years are in a single spreadsheet page - salinity (ppi) and the following in uM concentrations: PO4, NO2+NO3, NH4, Si, TP, TN - redundant ASCII copies in directory ../csv/ with the same root name yet extension csv - a plot is given in ../plots/nutrients.gif - original file is: dissolvednutrientsummary.xls 6) Dissolved Particulate - all sampling days of all years are in a single spreadsheet page - dissolved particulate C and N in mg/l; filters rinsed in deionized water (DI rinsed) or hydrochloric acid (HCI rinced). Means and standard deviations (sd) given. - redundant ASCII copies in directory ../csv/ with the same root name yet extension csv - original file is: dissolvedparticulateCNsummary.xls 7) Dome Efflux Rates - month/year of sampling of all years are in a single spreadsheet page - dome efflux rates (uM/m**2/24-hours) and O2 production (mg/hour) - redundant ASCII copies in directory ../csv/ with the same root name yet extension csv - original file is: domeeffluxsummary.xls 8) Domes Summary - month/year of sampling in a single spreadsheet page, with four pages total in the single file - redundant ASCII copies in directory ../csv/ with the same root name appended with the original spreadsheet page name (such as domesummary_Mar01deep.csv). - original file is: domesummary.xls 9) Sediment Trap Data - all sampling days of all years are in a single spreadsheet page - sedimentation (g/m**2/day), current speed (cm/s), direction (degrees), %organic, %CaCO3, gC/m**2/day, gN/m**2/day at both 4 and 10 m depth - redundant ASCII copies in directory ../csv/ with the same root name yet extension csv - a plot is given in ../plots/sedimentation.gif - original file is: sedimenttrapsummary.xls 10) Zooplankton Data - all sampling days of all years are in a single spreadsheet page - zooplankton AFDW (g), by filter size (G, L, M, S) - redundant ASCII copies in directory ../csv/ with the same root name yet extension csv - a plot is given in ../plots/zooplankton.gif - original file is: zooplanktonsummary.xls
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