Bathymetry, acoustic-backscatter, and time-series datasets collected between 2014 and 2016 of a field of crescent-shaped rippled scour depressions in northern Monterey Bay, California

Between November 2014 and June 2016 the U.S. Geological Survey, Pacific Coastal and Marine Science Center (PCMSC) conducted eight repeat, high-resolution bathymetry and acoustic-backscatter surveys of a small patch of seafloor offshore Santa Cruz in northern Monterey Bay, California. PCMSC also collected oceanographic time-series data over the same two-year period. This data release provides the eight bathymetry and acoustic-backscatter datasets, the time-series data, and FGDC metadata.

Tags: Geophysics

Cross-reef wave and water level data from coral reef environments (ver. 3.0, January 2024)

Coral reefs provide important protection for tropical coastlines against the impact of large waves and storm damage by energy dissipation through wave breaking and bottom friction. However, climate change and sea level rise have led to growing concern for how the hydrodynamics across these reefs will evolve and whether these changes will leave tropical coastlines more vulnerable to large wave events. Because the majority of reef flats are depth-limited, offshore water levels (tides) strongly control the ability of waves to propagate across a reef and impact the shoreline. In addition to offshore water levels, wave breaking also drives waters onto reefs and thus contributes to reef water levels; as offshore waves...

Categories: Data Release - Revised; Tags: Marine Geology

Waiakane, Molokai, HI, 2018 Coral Reef Circulation and Sediment Dynamics Experiment

Coral reefs generate significant volumes of carbonate sediment that becomes the primary source of beach material along many low-latitude shorelines that protect hundreds of millions of people globally. Despite this fact, there is little understanding of the specific processes that transport the carbonate sediment produced on the outer portions of coral reefs to the shoreline, let alone how those processes may be affected by projected sea-level rise. To better constrain the influence of sea-level rise on waves and sediment transport over a fringing coral reef flat, an experiment was conducted across a large fringing reef off the south shore of Molokai, Hawai’i. Here we provide data on water levels, waves, currents...

Jurabi, Exmouth, Western Australia, 2016 Coral Reef Circulation and Sediment Dynamics Experiment

Carbonate reefs are a major source of sediment for coastlines in much of the tropical regions of the world, contributing to significant shoreline accretion and beach nourishment. A collaborative experiment between the U.S. Geological Survey and the University of Western Australia was conducted on Ningaloo Reef, northwest Australia, to investigate this problem and determine the primary oceanographic processes responsible for cross-reef sediment transport. Data will be added to this folder as they are published.

Categories: Data; Tags: CMHRP, Coastal and Marine Hazards an dResources Program, Jurabi Coastal Park, Jurabi Point, Ningaloo Marine Park, All tags... PCMSC, Pacific Coastal and Marine Science Center, U.S. Geological Survey, USGS, Western Australia, Fewer tags

Time-series oceanographic data from the Monterey Canyon, CA October 2015 - March 2017

Time-series data of water depth, velocity, turbidity, and temperature were acquired between 5 October 2015 and 21 March 2017 within the Monterey Canyon off of Monterey, CA, USA. In order to better understand the triggering, progression and evolution of turbidity currents in Monterey Submarine Canyon, an experiment was designed to directly measure velocity, suspended sediment and physical water properties (temperature, salinity and density) along the canyon axis during an 18-month period. Three moorings in the upper canyon (MS1, MS2, MS3) containing oceanographic instruments and Anderson- type sediment traps were deployed during three consecutive six-month periods (A: October 2015 - April 2016; B: April - October...

Categories: Data; Tags: CMGP, CONDUCTIVITY, CTD, CTD measurement, CURRENT METERS, All tags... Coastal and Marine Geology Program, Geophysics, Monterey Canyon, OCEAN CURRENTS, Oceans, PCMSC, PRESSURE SENSORS, Pacific Coastal and Marine Science Center, SALINITY, SEDIMENT TRANSPORT, State of California, TIDAL HEIGHT, U.S. Geological Survey, USA, USGS, WATER DEPTH, WATER PRESSURE, WATER TEMPERATURE, WAVE HEIGHT, WAVE HEIGHT GAUGES, Water Column Features, Water Quality, geoscientificInformation, marine water quality, physical oceanography, time series datasets, water level measurements, wave observations, Fewer tags

Time series data of oceanographic conditions from La Parguera, Puerto Rico, 2017-2018 Coral Reef Circulation and Sediment Dynamics Experiment

Time-series data of water surface elevation, waves, currents, temperature, and salinity collected between 17 May 2017 and 17 Jan 2018 off the southwest coast of Puerto Rico in support of a study on circulation and sediment transport dynamics over coral reefs. The data are available in NetCDF format, grouped together in zip files by instrument site location. A README.txt file details the files contained within each zip, including the file names, type of data collected, instrument that collected the data, depth, and start and end dates/times.

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bahia de Guanica, CMHRP, Coastal and Marine Hazards and Resources Program, Commonwealth of Puerto Rico, Hydrology, All tags... La Parguera, Marine Geology, PCMSC, Pacific Coastal and Marine Science Center, U.S. Geological Survey, USGS, Water Column Features, Water Quality, geoscientificInformation, marine water quality, ocean currents, ocean salinity, ocean waves, oceans, physical oceanography, salinity/density, time series datasets, water level measurements, water pressure, water temperature, wave observations, Fewer tags

Data from coastal circulation and water-column properties in the National Park of American Samoa, February-July 2015

In 2015, U.S. Geological Survey (USGS) and U.S. National Park Service (NPS) researchers began a collaborative study to determine coastal circulation patterns and water-column properties along north-central Tutuila, in an area focused on NPSA’s Tutuila Unit and its coral reef ecosystem. The continuous measurements of waves, currents, tides, and water-column properties (temperature and salinity) from these instrument deployments, coupled with available meteorological measurements of wind and rainfall, provide information on nearshore circulation and the variability in these hydrodynamic properties for NPSA’s Tutuila Unit. These data will complement ongoing and future water quality efforts along north-central Tutuila...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geophysics

Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA

Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA. The data are available in NetCDF format, grouped together in zip files by instrument site location. These data support a modeling study on the effects of potential watershed restoration on decreasing sediment loads to adjacent reefs (Storlazzi and others, 2023).

Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Hydrology, Marine Geology, Maui, All tags... PCMSC, Pacific Coastal and Marine Science Center, State of Hawaii, U.S. Geological Survey, USGS, Water Column Features, Water Quality, geoscientificInformation, marine water quality, ocean currents, ocean waves, oceans, physical oceanography, time series datasets, water level measurements, water pressure, water temperature, water turbidity, wave observations, Fewer tags

Observations of coral reef oceanographic and groundwater properties off Makua, Kauai, HI, USA, August 2016

Pervasive and sustained coral diseases contribute to the systemic degradation of reef ecosystems, however, an understanding of the physicochemical controls on a coral disease event is still largely lacking. Water circulation and residence times and submarine groundwater discharge all determine the degree to which reef organisms are exposed to the variable chemistry of overlying waters; understanding these physical controls is necessary to interpret spatial patterns in coral health. The recent discovery of coral Black Band Disease at Mākua Reef on Kauaʻi, Hawaiʻi prompted an investigation into the physicochemical drivers and geomorphic controls of reef water circulation, and the temporally variable nutrient fluxes...