Popis

Terrain data, as defined in FEMA Guidelines and Specifications, Appendix N: Data Capture Standards, describes the digital topographic data that were used to create the elevation data representing the terrain environment of a watershed and/or floodplain. Terrain data requirements allow for flexibility in the types of information provided as sources used to produce final terrain deliverables. Once this type of data is provided, FEMA will be able to account for the origins of the flood study elevation data. (Source: FEMA Guidelines and Specifications, Appendix N, Section N.1.2).LIDAR data is remotely sensed high-resolution elevation data collected by an airborne collection platform. By positioning laser range finding with the use of 1 second GPS with 100hz inertial measurement unit corrections; Terrapoint's LIDAR instruments are able to make highly detailed geospatial elevation products of the ground, man-made structures and vegetation. The LiDAR flightlines for this project was planned for a 50% acquisition overlap. The nominal resolution of this project without overlap is 1.25m (Optech) and 1m (ALTMS) spacing. Four returns were recorded for each pulse in addition to an intensity value. GPS Week Time, Echo, Intensity, Flightline number and scan angle attributes were provided for each LiDAR point. Data is provided as random points, in LAS v1.0 format, classified according to ASPRS Class Code 2=Ground 1=Undefined.

Obecné informace

• Dokumentace

  http://catalog.data.gov/dataset/suffolk-county-lidar-survey Do you think this data is incorrect? Let us know

• Poskytovatel

  Federal Emergency Management Agency, Department of Homeland Security Do you think this data is incorrect? Let us know

Právní informace

• Právní prohlášení

  http://catalog.data.gov/dataset/suffolk-county-lidar-survey Do you think this data is incorrect? Let us know

• Under which licence can people outside the US reuse this data?

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• Obsah chráněný autorským právem

  yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

• Licence obsahu

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• Ochrana soukromí

  nehraje roli, data se netýkají fyzických osob Do you think this data is incorrect? Let us know

Praktické informace

• Relevantní datové katalogy

  http://catalog.data.gov/organization/fema-gov Do you think this data is incorrect? Let us know

• Frekvence změn

  no Do you think this data is incorrect? Let us know

• Zálohování dat

  data jsou zálohována offsite Do you think this data is incorrect? Let us know

Technické informace

• Seznam publikovaných datových sad

  http://catalog.data.gov/api/rest/package/suffolk-county-lidar-survey Do you think this data is incorrect? Let us know

Sociální informace

• Strojově čitelná metadata

  název Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  popis Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  hlavní URL Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  URL dokumentace Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  četnost aktualizací Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  poskytovatel Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  distribuce Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  datum vydání Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  datum poslední změny Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  související časové období Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  související geografické území Do you think this data is incorrect? Let us know

• Strojově čitelná metadata k distribucím

  datum vydání Do you think this data is incorrect? Let us know

• Strojově čitelná metadata k distribucím

  URL pro přístup k datům Do you think this data is incorrect? Let us know

• Strojově čitelná metadata k distribucím

  URL datové sady Do you think this data is incorrect? Let us know

• Kontakty

  http://catalog.data.gov/dataset/suffolk-county-lidar-survey Do you think this data is incorrect? Let us know

• Zpětná vazba k publikovaným datovým sadám

  http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/suffolk-county-lidar-survey Do you think this data is incorrect? Let us know