Use of Lidar in the USACE

Transcription

1 Use of Lidar in the USACE Charlene Sylvester USACE Mobile District, Spatial Data Branch / Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) GIS Day in Vicksburg March 15, 2012

2 Agenda Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) and USACE National Coastal Mapping Program (NCMP) Lidar use in USACE Coastal Regional Sediment Management Shore Protection Environmental Restoration Inland Overland flooding analysis Assessment of river bank slide-in

3 Joint Airborne Lidar Bathymetry Technical Center of Expertise SOPs OPERATIONS Collection Areas Annual Technical Workshop June 2012, Chicago Sensors and systems RESEARCH AND DEVELOPMENT Data Exploitation

4 National Coastal Mapping Program Number of times surveyed since 2004 One Time Two Times Three Times Four Times Five Times Data Products *ASCII XYZ Aerial photos Zero contour Aerial photo mosiacs 1-meter bathy/topo DEM *LAS format topo 1-meter bathy/topo bare earth DEM Hyperspectral image mosaics Laser reflectance images Basic landcover classification Volume change

5 Tour de USACE lidar use

6 Detroit District (LRE) FEMA Great Lakes Coastal Flood Hazard Mapping Program Extract lidar-derived cross-shore elevation transects for incorporation into CSHORE modeling of flood hazard elevations Improved resolution of: Runup calculations Morphology predictions Flood hazard elevations 2008 NCMP Lidar: Holland, MI POC: Greg Mausolf

7 Buffalo District (LRB) Lake Erie Regional Sediment Management Calculate difference between Digital Elevation Models (DEMs) to assess sediment accumulation at Dunkirk Harbor, NY POC: Weston Cross

8 New England District (NAE) Newburyport Harbor and Merrimack River, MA Assess inlet morphology change to support development of a long-term sediment management plan Source: USACE JALBTCX NCMP Aerial Photo: MA GIS, 2008 Coordinate Reference: State Plane MA Mainland meters Elevations: meters, NAVD88 POC: Irene Watts

9 New England District (NAE) Truro, MA Study the feasibility of re-establishing a historic inlet between Cape Cod Bay and Pilgrim Lake using the USACE Coastal Modeling System (CMS) 2010 NCMP Lidar: Provincetown and Truro, MA Pilgrim Lake Inlet Alternative (CMS Modeling) Existing Ebb Shoal via Culvert Opening (MA GIS, 2008) Morphology Change Plot: Warmer colors; accretion Cooler colors; erosion POC: Irene Watts

10 New England District (NAE) Nantasket Beach (Hull, MA) Examine impacts of seawall on beach erosion Project Location POC: John Winkelman

11 New England District (NAE) Elevation (ft-navd88) Nantasket Beach (Hull, MA) Extract lidar profiles coincident with historical profile data to facilitate volume change calculations over the active beach zone 2010 NCMP Lidar Nantasket Beach Profile 1963, 2005, and 2010 Comparison (2005 Profile #3) 1963 Profile #16 (Profile #3 in 2005 Survey) 2005 Profile # Profile # , , , , , Distance from Base Point (feet) POC: John Winkelman

12 Baltimore District (NAB) Delaware Army National Guard Bethany Beach Training Site Utilize lidar DEMs to support environmental assessments for military construction projects in a known 100-year floodplain Proposed Conditions 2010 NCMP Lidar: Bethany Beach, DE Existing Conditions ftp://ftp.usace.army.mil/usace/nab/lidar/bbts_floodwaiver_report.pdf POC: Jared Scott

13 Baltimore District (NAB) Alexandria, VA Utilize lidar DEMs to complete an overland flooding analysis for a 100-year flood Army Geospatial Center 1-m DEM FLO2D Results ftp://ftp.usace.army.mil/usace/nab/lidar/alexandriava_hooffsrunflooding_jun09.pdf POC: Jared Scott

14 Jacksonville District (SAJ) West Coast of Florida Regional Sediment System Regional, interconnected sediment system requires data and analysis tools that work in a regional context POC: Kelly Legault

15 POC: Kelly Legault Jacksonville District (SAJ) USACE NCMP Regional Lidar Coverage Extract lidar profiles from 2006 and 2010 regional lidar datasets to facilitate volume change calculations over the active beach zone in Sarasota County, FL 2006 NCMP Lidar 2010 NCMP Lidar

16 Jacksonville District (SAJ) Sarasota County, FL Use lidar for ebb shoal volume calculations and as input for CMS modeling Big Pass 2010 NCMP Lidar POC: Kelly Legault

17 Mobile District (SAM) Black Warrior and Tombigbee River System, AL Assess impact of a 2009 river bank slide-in along a dike encompassing the Ophelia Upland Disposal Area at river mile 329 Slide-in POC: Glen Greiner

18 Mobile District (SAM) Black Warrior and Tombigbee River System, AL Assess impact of a 2009 river bank slide-in along a dike encompassing the Ophelia Upland Disposal Area at river mile 329

19 Seattle District (NWS) Shoalwater Dune Restoration Project Use lidar to support numerical modeling of flow conditions with and without dune restoration Active Erosion Area Pre-breach imagery Post-breach: July 2010 NCMP imagery Existing Pile Dike Littoral drift plugging east inlet and forcing inlet toward shoreline POC: David Michalsen

20 Seattle District (NWS) Shoalwater Dune Restoration Project Without dune restoration Peak Flood tide velocities Peak Ebb tide velocities Red = high velocity Blue = low velocity POC: David Michalsen

21 Seattle District (NWS) Shoalwater Dune Restoration Project With dune restoration Peak Flood tide velocities Peak Ebb tide velocities Red = high velocity Blue = low velocity POC: David Michalsen

22 Honolulu District (POH) Surge and Wave Island Modeling Studies HAKOU-2010-r01 Model Compile a comprehensive bathymetric data set on a regional scale that includes increased resolution in coastal areas Support state-of-the-art wave modeling studies for planning and real-time hurricane emergency management POC: Tom Smith

23 Honolulu District (POH) Surge and Wave Island Modeling Studies Assessment of wave energy attenuation as a function of bottom roughness POC: Tom Smith

24 Honolulu District (POH) Reef Mapping Imagery draped over lidar is used to understand spurs and grooves in reefs where different species would be found 1999 NCMP Lidar and Imagery: Ala Moana Beach Park, Oahu, HI POC: Benton Ching

25 Summary JALBTCX performs operations, R&D in airborne bathymetric lidar and complementary technologies in support of navigation, regional sediment management and environmental monitoring requirements of USACE. Lidar (and imagery! Hyperspectral!) use in USACE is expanding and supports a variety of inland and coastal applications. Exploitation of these data streams results in sophisticated information products that should be delivered in an easily ingestible and understood form (i.e. web services and web applications).

26 Acknowledgements LRE: Greg Mausolf LRB: Weston Cross NAE: Irene Watts and John Winkelman NAB: Jared Scott SAJ: Dave Robar and Kelly Legault SAM: Glen Greiner and Mike McBurney NWS: Dave Michalsen POH: Benton Ching and Tom Smith