Identification_Information: Citation: Citation_Information: Originator: US Army Engineer Joint Airborne Lidar Bathymetry Technical Center of Expertise.(ed.) Publication_Date: 20010800 Publication_Time: Unknown Title: Keauhou, Hawaii County, Hawaii Edition: 1.1 Series_Information: Publication_Information: Larger_Work_Citation: Citation_Information: Series_Information: Publication_Information: Description: Abstract: These data were collected by the SHOALS (Scanning Hydrographic Operational Airborne Lidar Survey) system which consists of an airborne laser transmitter/receiver capable of measuring 400 soundings per second. The system operates from a deHavilland DHC-6 Twin Otter flying at altitudes between 200 and 400 meters with a ground speed of about 100 knots. The SHOALS system also includes a ground-based data processing system for calculating acurate horizontal position and water depth. Lidar is an acronym for LIght Detection And Ranging. The system operates by emitting a pulse of light that travels from an airborne platform to the water surface where a small portion of the laser energy is backscattered to the airborne receiver. The remaining energy at the water's surface propogates through the water column and reflects off the sea bottom and back to the airborne detector. The time difference between the surface return and the bottom return corresponds to water depth. The maximum depth the system is able to sense is related to the complex interaction of radiance of bottom material, incident sun angle and intensity, and the type and quantity of organics or sediments in the water column. As a rule-of-thumb, the SHOALS system should be capable of sensing bottom to depths equal to two or three times the Secchi depth. Purpose: The purpose of the Keauhou survey was to collect and map data from the shoreline to -30m depths. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20001200 Range_of_Dates/Times: Multiple_Dates/Times: Currentness_Reference: Ground Condition Status: Progress: Complete Maintenance_and_Update_Frequency: Unknown Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -156.872 East_Bounding_Coordinate: -155.823 North_Bounding_Coordinate: +20.083 South_Bounding_Coordinate: +19.958 Keywords: Theme: Place: Stratum: Temporal: Access_Constraints: None Use_Constraints: Acknowledgement of the U.S. Army Engineer Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBCTX) would be appreciated in products derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Organization_Primary: Contact_Organization: U.S. Army Corps of Engineers JALBCTX Contact_Address: Address_Type: mailing and physical address Address: 109 St. Joseph Street City: Mobile State_or_Province: Alabama Postal_Code: 36602 Contact_Voice_Telephone: 251-690-3467 Contact_Facsimile_Telephone: 251-690-3464 Security_Information: Cross_Reference: Citation_Information: Series_Information: Publication_Information: Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: SHOALS has demonstrated capabilities that meet US Army Corps of Engineers Hydrographic Survey accuracy requirements for Class 1 surveys and the International Hydrographic Organization nautical charting standards for Order 1. Logical_Consistency_Report: N/A Completeness_Report: N/A Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: +/- 3 meters (1 sigma) Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: +/- 15 cm (1 sigma) Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers JALBTCX Publication_Date: 20010800 Title: Keauhou, Hawaii County, Hawaii Edition: 1.1 Series_Information: Publication_Information: Larger_Work_Citation: Citation_Information: Series_Information: Publication_Information: Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20001200 Range_of_Dates/Times: Multiple_Dates/Times: Source_Currentness_Reference: Ground Condition Source_Citation_Abbreviation: None Source_Contribution: SHOALS Process_Step: Process_Description: The SHOALS airborne system acquires a tremendous volume of raw data during a single mission. The lidar data are unique and require a specialized Data Processing System (DPS) for post-processing. The DPS main funcions 1) import airborne data stored on high density data tape; 2) perform quality control checks on initial depths and horizontal positions; 3) provide display and edit capabilities; 4) calculate depth and position (XYZ) values for each sounding; and 5) output final positions and depths for each sounding. Process_Date: 20001200 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Organization_Primary: Contact_Address: Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Keauhou, Hawaii County, Hawaii Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00000001 Longitude_Resolution: 0.00000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: WGS84 Ellipsoid_Name: WGS84 Semi-major_Axis: 6 378 137 Denominator_of_Flattening_Ratio: -0.414213562 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Depth_System_Definition: Depth_Datum_Name: Mean lower low water Depth_Resolution: 0.1 Depth_Distance_Units: Meters Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Attribute: Attribute_Domain_Values: Attribute_Value_Accuracy_Information: Overview_Description: Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Eddie Culpepper Contact_Organization: USACE Contact_Organization_Primary: Contact_Address: Address_Type: mailing and physical address Address: OP-J 109 St. Joseph Street City: Mobile State_or_Province: AL Postal_Code: 36602 Contact_Voice_Telephone: 251-690-3467 Distribution_Liability: None Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Dialup_Instructions: OffLine_Option: Recording_Capacity: Available_Time_Period: Time_Period_Information: Single_Date/Time: Range_of_Dates/Times: Multiple_Dates/Times: Metadata_Reference_Information: Metadata_Date: 20010800 Metadata_Review_Date: 20010800 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Eddie Culpapper Contact_Organization: USACE Contact_Organization_Primary: Contact_Address: Address_Type: mailing and physical address Address: OP-J 109 St. Joseph Street City: Mobile State_or_Province: AL Postal_Code: 36602 Contact_Voice_Telephone: 251-690-3467 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: June 8, 1994 Metadata_Security_Information: