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Items below are listed from most recently updated to least recently updated.
These are results 1 through 25 of 54 matches.
Description: High-resolution measurements of waves, currents, water levels, temperature, salinity and turbidity were made in Hanalei Bay, northern Kaua‘i, Hawai‘i, during the summer of 2006 to better understand coastal circulation, sediment dynamics, and the potential impact of a river flood in a coral reef-lined embayment during quiescent summer conditions. A series of bottommounted instrument packages were deployed in water depths of 10 m or less to collect long-term, high-resolution measurements of waves, currents, water levels, temperature, salinity, and turbidity. These data were supplemented with a series of profiles through the water column to characterize the vertical and spatial variability in water column properties within the bay. These measurements support the ongoing process studies being conducted as part of the U.S. Geological Survey (USGS) Coastal and Marine Geology Program’s Pacific Coral Reef Project; the ultimate goal is to better understand the transport mechanisms of sediment, larvae, pollutants, and other particles in coral reef settings. Information regarding the USGS study conducted in Hanalei Bay during the 2005 summer is available in Storlazzi and others (2006), Draut and others (2006) and Carr and others (2006). This report, the last part in a series, describes data acquisition, processing, and analysis for the 2006 summer data set.
Publication Open-File Report 2007-1219: Science and Management in the Hanalei Watershed, A Trans-Disciplinary Approach |
Publication Scientific Investigations Report 2008-5128: Submarine ground-water discharge and fate along the coast of Kaloko-Honokohau National Historical Park, Island of Hawai'i--Part 2 |
Publication Open-File Report 2004-1447: A Preliminary Assessment of Geologic Framework and Sediment Thickness Studies Relevant to Prospective US Submission on Extended Continental Shelf |
Publication Open-File Report 2008-1215: Winds, Waves, Tides, and the Resulting Flow Patterns and Fluxes of Water, Sediment, and Coral Larvae off West Maui, Hawaii |
Description: The impending development for the west Hawai‘i coastline adjacent to Kaloko-Honokōhau National Historical Park (KAHO) may potentially alter coastal hydrology and water quality in the marine waters of the park. Water resources are perhaps the most significant natural and cultural resource component in the park, and are critical to the health and well being of six federally listed species. KAHO contains ecosystems of brackish anchialine pools, two 11-acre fishponds, and 596 acres of coral reef habitats, all fed by groundwater originating upslope. The steep gradients on high islands, combined with typically porous substrates and high rainfall levels at upper elevations, make these settings especially vulnerable to shifts in submarine groundwater discharge (SGD) and its entrained nutrients and pollutants. Little is known about the magnitude, rate, frequency, and variability of SGD and its influence on contaminant loading to Hawaiian coastal environments. Recent studies show that groundwater flux through the park is vital to many ecosystem components including anchialine ponds and wetland biota. The function of these ecosystems may be vulnerable to changes in groundwater flow stemming from natural changes (climate and sea level) and land use (groundwater pumping and contamination). Oki and others (1999) showed that increased groundwater withdrawals for urban development since 1978 likely decreased groundwater flux to the coast by 50%. During this same time, the quality of groundwater has been vulnerable to increases in contaminant and nutrient/fertilizer additions associated with industrial, commercial and residential use upslope from KAHO (Oki and others, 1999). High-resolution measurements of waves, currents, water levels, temperature and salinity were collected in the marine portion of the park from November, 2005, through July, 2006, to establish baseline information on the magnitude, rate, frequency, and variability of SGD. These data are intended to help researchers and resource managers better understand the hydrodynamics of the oceanographic environment in the park’s coastal waters as it pertains to the pathway of SGD and associated nutrient and contaminant input to the park’s coral reef ecosystem. Measurements were made of the oceanographic environment (waves, tides, currents, salinity and temperature) using hydrodynamic techniques to characterize and quantify the distribution, input and throughput of freshwater and associated nutrient/contaminant within the near shore environment of KAHO through the emplacement of a series of bottom-mounted instruments deployed in water depths less than 15 m. This study was conducted in support of the National Park Service (NPS) by the U.S. Geological Survey (USGS) Coastal and Marine Geology Program’s Coral Reef Project. These measurements support the ongoing studies of the Coral Reef Project to better understand the transport mechanisms of sediment, larvae, nutrients, pollutants and other particles on Pacific coral reefs. Subsequent reports will address the spatial and temporal variability in groundwater input and the associated nutrient flux in the park’s waters
Educational Materials USGS Coastal Change Hazards |
Educational Materials Coastal and Marine Knowledge Bank |
Publication U.S. Geological Survey Open-File Report 2005-1248, Coastal Vulnerability Assessment of Kaloko-Honokohau National Historical Park to Sea-Level Rise, Title Page |
Publication Data Series 289: Sedimentary Properties of Shallow Marine Cores Collected in June and September 2006, Hanalei Bay, Kaua'i, Hawai'i |
General Information El Niño Home Page |
Research Project National Assessment of Coastal Change Hazards |
Research Project National Assessment of Shoreline Change Project |
Publication Open-File Report 2005-1070: Moloka'i Benthic Habitat Mapping |
Data Set Scientific Investigations Report 2006-5254: Geologic Resource Evaluation of Pu‘ukohola Heiau National Historic Site, Hawai‘i |
Publication Scientific Investigations Report 2006-5258: Geologic Resource Evaluation of Pu'uhonua O Honaunau National Historical Park, Hawai'i, Part II |
General Information Scientific Investigations Report 2006-5256: Benthic Habitats and Offshore Geological Resources of Kaloko-Honokohau National Historical Park, Hawai'i |
Publication Open-File Report 2004-1101: Catalog of research activity numbers and associated Publication Numbers, OF2004-1102 thru 1188 - USGS WCMG |
Publication USGS Open-File Report 2005-1027, An Operational Mean High Water Datum for Determination of Shoreline Position from Topographic Lidar Data, Title Page |
General Information USGS Coastal and Marine Geology - usSEABED |
Description: Delivery and dispersal of fluvial sediment in Hanalei Bay, Kaua’i, Hawaii, have important implications for the health of local coral reefs. The reef community in Hanalei Bay represents a relatively healthy ecosystem. However, the reefs are periodically stressed by storm waves, and increases in sediment and dissolved substances from the Hanalei River have the potential to cause additional stress. Increased turbidity and sedimentation on corals during Hanalei River floods that occur in seasons of low wave energy, when sediment would not be readily remobilized and advected out of the bay, could affect the health and sustainability of coral reefs and the many associated species.
Description: High-resolution measurements of waves, currents, water levels, temperature, salinity and turbidity were made in Hanalei Bay, northern Kaua’i, Hawaii, during the summer of 2005 to better understand coastal circulation and sediment dynamics in coral reef habitats.
Publication Open-File Report 2006-1147: Coastal Circulation and Sediment Dynamics in Hanalei Bay, Kaua'i, Hawaii, Part III, Studies of Sediment Toxicity |
Research Project Research Projects - National Seafloor Mapping and Benthic Habitat Studies: Pacific |
Map Seafloor Mapping and Characterization |
These are results 1 through 25 of 54 matches. | |
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