Time Series for the east end of East Island of the Isles Dernieres 1986 - 2007 Aerial Video Survey Program Pontchartrain Institute of Environmental Sciences.

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Presentation transcript:

Time Series for the east end of East Island of the Isles Dernieres Aerial Video Survey Program Pontchartrain Institute of Environmental Sciences University of New Orleans Karen A Westphal

The Aerial Video Survey Program has been acquiring photography and video of the northern Gulf of Mexico shoreline since Oblique aerial photography does not produce exact matches due to variations in altitude, camera angle and distance from the shore (and different photographers). Photos that matched well were scaled and aligned to illustrate the landscape changes that have taken place between time periods. Occasionally a pointer or symbol was added to assist with the visual comparison. The Aerial Video Survey Program has been acquiring photography and video of the northern Gulf of Mexico shoreline since Oblique aerial photography does not produce exact matches due to variations in altitude, camera angle and distance from the shore (and different photographers). Photos that matched well were scaled and aligned to illustrate the landscape changes that have taken place between time periods. Occasionally a pointer or symbol was added to assist with the visual comparison.

Location of East Island, Louisiana East Island is in BICM region “Teche Delta” and BICM segment 36 “East Island”

º 04'25"/90 º 38'06 ” View to the west July 23, 1986

º 04'25"/90 º 38'06 ” View to the west July 9, 1987

1988 post-Hurricane Gilbert 29 º 04'25"/90 º 38'06 ” View to the west October 12, 1988

º 04'25"/90 º 38'06 ” View to the west June 25, 1990

1992 pre-Hurricane Andrew 29 º 04'25"/90 º 38'06 ” View to the west July 9, 1992

1992 post-Hurricane Andrew 29 º 04'25"/90 º 38'06 ” View to the west August 30, 1992

º 04'25"/90 º 38'06 ” View to the west June 16, 1993

º 04'25"/90 º 38'06 ” View to the west July 26, 1994

1996 post TPCG FEMA project 29 º 04'25"/90 º 38'06 ” View to the west July 17, 1996

yr post TE-20 project 29 º 04'25"/90 º 38'06 ” View to the west June 14, 2001

2002 post-Tropical Storm Isodore 29 º 04'25"/90 º 38'06 ” View to the west October 1, 2002

2002 post-Hurricane Lili 29 º 04'25"/90 º 38'06 ” View to the west October 5, 2002

2004 pre-Hurricane Ivan 29 º 04'25"/90 º 38'06 ” View to the west September 13, 2004

2004 post-Hurricane Ivan 29 º 04'25"/90 º 38'06 ” View to the west September 18, 2004

2005 post-Hurricane Katrina/Rita 29 º 04'25"/90 º 38'06 ” View to the west September 30, 2005

º 04'25"/90 º 38'06 ” View to the west (~234 º ) April 20, 2007

10 Years  1986  1996

11 Years  1996  2007

21 Years  1986  2007

Relevant Coastal Restoration Projects  Isles Dernieres Restoration East Island. State Project Number: TE-20 Project Priority List (PPL): 01 Federal Sponsor: Environmental Protection Agency (EPA) Project Type: Barrier Island Construction Completion Date: 1999 Description: The project objective is to restore the coastal dunes and wetlands of the Eastern Isles Dernieres. Approximately 3,925,000 cubic yards of sand were dredged from adjacent waters and used to build a retaining dune which was then hydraulically filled to create an elevated marsh platform. Sand fences and vegetation were also installed to stabilize the sand and minimize wind-driven transport.  Isles Dernieres Restoration East Island. State Project Number: TE-20 Project Priority List (PPL): 01 Federal Sponsor: Environmental Protection Agency (EPA) Project Type: Barrier Island Construction Completion Date: 1999 Description: The project objective is to restore the coastal dunes and wetlands of the Eastern Isles Dernieres. Approximately 3,925,000 cubic yards of sand were dredged from adjacent waters and used to build a retaining dune which was then hydraulically filled to create an elevated marsh platform. Sand fences and vegetation were also installed to stabilize the sand and minimize wind-driven transport.