Metadata:

• Identification_Information
• Data_Quality_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Christopher R. Sherwood

Publication_Date: 2011

Title:

Oceanographic Observations made adjacent to the Chandeleur Islands, Louisiana, July-November, 2010.

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Other_Citation_Details: This applies to the data distribution site for an experiment.

Online_Linkage: <https://stellwagen.er.usgs.gov/GOMEX_CI.html>

Description:

Abstract:

A program to measure waves, water levels, and currents near the Chandeleur Islands, Louisiana and adjacent berm construction site was conducted by the U.S. Geological Survey (USGS) during summer and autumn 2010. The Chandeleur Islands have been the subject of ongoing USGS studies of coastal erosion and land loss. The berm was being constructed by the State of Louisiana in response to the Deepwater Horizon oil spill. The oceanographic measurements accompany USGS observations of geomorphic response to storms of the berm and Chandeleur Islands. For more information see <https://cmgds.marine.usgs.gov/fan_info.php?fa=10055>, <https://cmgds.marine.usgs.gov/fan_info.php?fa=10069>, <https://cmgds.marine.usgs.gov/fan_info.php?fa=10092>.

Purpose:

This dataset provides oceanographic measurements for use in assessment how coastal erosion on barrier Islands and constructed berms may be effected by storms. Instrumented moorings were deployed at four sites on 10 July 2010, serviced 11-14 September 2010, and finally recovered on 7-8 November 2010. These data will be used to assess model calculations of waves, water levels, and currents near the Chandeleur Islands. The locations, deployment depths, sensor type and parameters measured during the deployment are presented in the table displayed by the Basic Sampling Interval link on the stellwagen server (<https://stellwagen.er.usgs.gov/GOMEX_CI.html>).

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20100708

Ending_Date: 20101108

Currentness_Reference:

ground condition of data collection; data were not collected during the entire span of dates at each location and instrument. See the sampling interval link for specific start and end dates for each instrument.

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -88.8609

East_Bounding_Coordinate: -88.5146

North_Bounding_Coordinate: +29.9698

South_Bounding_Coordinate: +29.7391

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: Oceanographic observations

Theme_Keyword: Current

Theme_Keyword: Waves

Theme_Keyword: Temperature

Theme_Keyword: Salinity

Theme_Keyword: Pressure

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: CMGP

Theme_Keyword: Woods Hole Coastal and Marine Science Center

Theme_Keyword: Deepwater Horizon

Theme_Keyword: Oil Spill Response

Theme_Keyword: WHCMSC

Theme_Keyword: netCDF

Theme_Keyword: R/V Tommy Munroe

Theme_Keyword: R/V Acadiana

Theme_Keyword: 2010-055-FA

Theme_Keyword: 2010-069-FA

Theme_Keyword: 2010-092-FA

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: oceans

Theme_Keyword: oceans and coastal

Theme_Keyword: geoscientificInformation

Theme_Keyword: climatologyMeteorologyAtmosphere

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: Chandeleur Islands

Place_Keyword: Barrier Island

Place_Keyword: Mississippi Delta

Place_Keyword: Gulf of Mexico

Place_Keyword: United States

Place_Keyword: North America

Place_Keyword: Southeast

Place_Keyword: MS

Place_Keyword: LA

Place_Keyword: Mississippi

Place_Keyword: Louisiana

Temporal:

Temporal_Keyword_Thesaurus: None

Temporal_Keyword: 2010

Access_Constraints: None

Use_Constraints:

Data presented within this publication are in the public domain. Please acknowledge the U.S. Geological Survey, Coastal Marine Geology Program as the source of this data.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Christopher R. Sherwood

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: United States

Contact_Voice_Telephone: (508) 457-8700 x2269

Contact_Electronic_Mail_Address: csherwood@usgs.gov

Data_Set_Credit:

This research was funded by the USGS Coastal and Marine Geology Program. We thank the captains and crews of the R/V Acadiana and R/V Tommy Monroe for their outstanding logistical support for this field measurement program.

Cross_Reference:

Citation_Information:

Originator: E.T. Montgomery

Originator: M.A. Martini

Originator: F.L. Lightsom

Originator: Bradford Butman

Publication_Date: 2008

Title:

Documentation of the U.S. Geological Survey Oceanographic Time-Series Measurement Database

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2007-1194

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: <http://pubs.usgs.gov/of/2007/1194/>

Data_Quality_Information:

Logical_Consistency_Report: Data are logically consistent

Completeness_Report:

The data have been edited to remove outlying points and data recorded when the instruments were out of the water before and after deployment. At site CI-3 about half of the current-meter data were missing from the first deployment period and because the instrument performance was intermittent, the data were recovered as three files instead of one continuous file. The pressure measurements from this instrument were incorrect for both deployments, so water level data are missing from the ADCP files and wave data are not available. All the other data are usable.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The mooring deployment locations (latitude and longitude) were recorded based on the vessel's onboard GPS navigation systems. The accuracy of each system is better than 15 meters.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Bottom-mounted sensors have instrument_height attributes (meters above bottom) measured prior to deployment. The sensor height above bottom is accurate to within 1 cm, but the depth (representing the initial measurement depth) is only accurate to about 1 meter due to tidal fluctuations and use of nominal water depth. If the sensor acquires data in bins by depth (ADCP, PCADP), those depths are accurate to a few centimeters relative to each other. Sedimentation or scouring around the platform may change the vertical position over the course of a deployment by as much as 20 cm. The data is not adjusted to reflect any temporal changes in elevation of the sensor.

Lineage:

Process_Step:

Process_Description:

FIELD PROGRAM Four sites were occupied for two adjacent time periods from July 8 through November 7 or 8 2011. Each platform was out of the water for about a day in mid-September for battery replacement, data offload and other refurbishment. Separate platform IDs were assigned for each deployment at each site. Sites 1-3 were East of the Island at varying distances offshore in water depths of 13 to 30 meters. Site 6 was West of the Island, deployed at 4 meters depth. The platform IDs are as follows: Site 1- 889, 893; Site 2- 890, 895; Site 3- 891, 897; Site 6- 892, 899. An upward looking TRDI ADCP was deployed at each site to measure ocean current and wave conditions. All the data except for the waves parameters from both deployments at site 3 are usable.

Process_Date: 2010

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ellyn Montgomery

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: United States

Contact_Voice_Telephone: 508-457-8700 x2356

Contact_Electronic_Mail_Address: emontgomery@usgs.gov

Process_Step:

Process_Description:

DATA PROCESSING Data processing was conducted using the proprietary software for each instrument, and (or) specialized software developed by the USGS. The proprietary software was often used to download data from the instruments and export the data to ASCII-files. Post-processing of the raw binary or ASCII files was accomplished using USGS software developed in the MATLAB (<http://www.mathworks.com/>) programming language. Data were first decoded and calibrated from instrument-specific formats and units to the EPIC-standard NetCDF format (<http://www.pmel.noaa.gov/epic/>) and scientific units. Data were carefully checked for instrument malfunctions and then edited. The beginning and end of each data series were truncated to remove data collected out of water. The data files include all variables recorded at the basic sampling interval. The processing steps on the ADCP at site 3 that produced 3 sections were the same as what would have been done if it had functioned properly and generated one file. These data have been edited to remove outlying points and data recorded when the instruments were out of the water before and after deployment. These data were released as provisional to enable their timely use in post-spill modeling efforts. They will be reviewed for Best basic Version (BBV) approval as time allows.

Process_Date: 2011

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Christopher R. Sherwood

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1498

Country: USA

Contact_Voice_Telephone: (508) 457-8700 x2269

Contact_Electronic_Mail_Address: csherwood@usgs.gov

Resource_Description:

Downloadable Data available from <https://stellwagen.er.usgs.gov/GOMEX_CI.html>.

Distribution_Liability:

Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: netCDF

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <https://stellwagen.er.usgs.gov/GOMEX_CI.html>

Fees: None.

Technical_Prerequisites:

The user's computer must have software to read netCDF files or import OPeNDAP.

Metadata_Reference_Information:

Metadata_Date: 20120521

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ellyn T. Montgomery

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: United States

Contact_Voice_Telephone: (508) 457-8700 x2356

Contact_Electronic_Mail_Address: emontgomery@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time