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  • Atlantic Climate Adaptation Solutions Association Solutions d'adaptation aux changements climatiques pour l'Atlantique

    Aerial Photography Geo-Referencing and Recent Coastal Evolution of the Rifle Range Area (Summerside, Prince Edward Island)

    November 2010 S. O’Carroll, Géo Littoral Consultants

  • Report Prepared by: S. O’Carroll, Géo Littoral Consultants, 396 Knightsbridge Crescent, Ancaster, Ontario, L9G 3S5 and commissioned by the Atlantic Climate Solutions Association (ACASA), a non- profit organization formed to coordinate project management and planning for climate change adaptation initiatives in Nova Scotia, New Brunswick, Prince Edward Island and Newfoundland and Labrador and supported through the Regional Adaptation Collaborative, a joint undertaking between the Atlantic provinces, Natural Resources Canada and regional municipalities and other partners.

    Project Management: Prince Edward Island Department of Environment, Energy and Forestry, 11

    Kent Street, Charlottetown, PE, C1A 7N8, Tel: 902 368-6111, eotaylor@gov.pe.ca

    Disclaimer: This publication is not be used without permission, and any unauthorized use is strictly prohibited. ACASA, the authors, the provinces of Nova Scotia, New Brunswick, Prince Edward Island, Newfoundland and Labrador, and the Regional Adaptation Collaborative are not responsible for any unauthorized use that may be made of the information contained therein. The opinions expressed in this publication do not necessarily reflect those of ACASA, its associated provinces, or other partners of the Regional Adaptation Collaborative.

    This report is also available for download from the ACASA website at: www.atlanticadaptation.ca

    Photo Credit: D. Jardine

    http://www.atlanticadaptation.ca/

  • Aerial photography georeferencing and recent coastline evolution of the Rifle Range area (City of Summerside, PEI): Final Report submitted by Géo Littoral Consultants, 08 November 2010

    Géo Littoral Consultants

    geolittoral@gmail.com i

    TABLE OF CONTENTS

    LIST OF FIGURES .............................................................................................................................................ii

    LIST OF TABLES ...............................................................................................................................................ii

    ACKNOWLEDGEMENTS .................................................................................................................................iii

    INTRODUCTION ............................................................................................................................................. 1

    Selection of aerial photographs ................................................................................................................ 2

    IMAGE GEOREFERENCING PROCESS ............................................................................................................. 3

    Scanning aerial photographs..................................................................................................................... 4

    Ground control point identification .......................................................................................................... 4

    CALCULATION OF THE MARGIN OF ERROR ................................................................................................... 6

    COASTAL EVOLUTION OF THE RIFLE RANGE AREA........................................................................................ 7

    Historical positions of the coastline .......................................................................................................... 7

    Coastline displacement rates .................................................................................................................. 10

    A focus on Duck Pond, Rifle Range Point and Sea Weed Road erosion sites....................................... 13

    CLOSING REMARKS...................................................................................................................................... 15

    REFERENCES ................................................................................................................................................ 16

    APPENDIX A - Aerial photo scale and .dpi resolution.................................................................................. 17

    APPENDIX B - GCP residuals and RMS error for GeoTIFFs produced .......................................................... 19

    APPENDIX C - Coastline displacement for selected periods........................................................................ 22

    APPENDIX D - Graphic representation of coastline displacement rates ..................................................... 29

  • Aerial photography georeferencing and recent coastline evolution of the Rifle Range area (City of Summerside, PEI): Final Report submitted by Géo Littoral Consultants, 08 November 2010

    Géo Littoral Consultants

    geolittoral@gmail.com ii

    LIST OF FIGURES

    Figure 1. Location of the Rifle Range study site. ........................................................................................... 1

    Figure 2. Ground control point identification: A- 1968 non-georeferenced aerial photograph; B- 2000

    georeferenced orthophoto.. .......................................................................................................... 5

    Figure 3. Mapped coastline positions for the selected years. ...................................................................... 8

    Figure 4. Detail of the Rifle Range point in 1968 (photo A20381-253)....................................................... 10

    Figure 5. Coastline displacement rates (m/yr) for the historical period of 1935-2000, organized in erosion

    and accretion classes. .................................................................................................................. 12

    LIST OF TABLES

    Table 1. Average coastline retreat rates (erosion data only) and margin of error for selected time periods.

    ..................................................................................................................................................... 12

    Table 2. Greatest coastline retreat (m) and retreat rate (m/yr) for selected time periods........................ 13

    Table 3. Coastline displacement rate (m/yr), per period, for three sites within the study area. ............... 14

    A DVD-ROM accompanies this report and includes the following electronic files:

    RifleRange_FinalReport_06Nov2010.pdf .zip Folder: Rectify 1935_A5073-29 (containing 4 files)

    Rectify 1935_A5073-29.aux Rectify 1935_A5073-29.rrd Rectify 1935_A5073-29.tfw Rectify 1935_A5073-29.tif

    .zip Folder: Rectify 1954_A13971-28 (containing 4 files) zip Folder: Rectify 1980_A80422-57 (containing 4 files) Rectify 1954_A13971-28.aux Rectify 1980_A80422-57.aux Rectify 1954_A13971-28.rrd Rectify 1980_A80422-57.rrd Rectify 1954_A13971-28.tfw Rectify 1980_A80422-57.tfw Rectify 1954_A13971-28.tif Rectify 1980_A80422-57.tif

    .zip Folder: Rectify 1968_A20381-253 (containing 4 files) zip Folder: Rectify 1990_A90408-214 (containing 4 files) Rectify 1968_A20381-253.aux Rectify 1990_A90408-214.aux Rectify 1968_A20381-253.rrd Rectify 1990_A90408-214.rrd Rectify 1968_A20381-253.tfw Rectify 1990_A90408-214.tfw Rectify 1968_A20381-253.tif Rectify 1990_A90408-214.tif

  • Aerial photography georeferencing and recent coastline evolution of the Rifle Range area (City of Summerside, PEI): Final Report submitted by Géo Littoral Consultants, 08 November 2010

    Géo Littoral Consultants

    geolittoral@gmail.com iii

    ACKNOWLEDGEMENTS

    Géo Littoral Consultants wishes to emphasize that the current study, and accompanying

    report, was produced with the help and participation of the following entities :

     The financial support for this study was provided through Natural Resources

    Canada – Regional Adaptation Collaboratives Program.

     The Forests, Fish and Wildlife Division of the PEI Department of the Environment,

    Energy and Forestry loaned the following aerial photographs from its collection

    (images that were either used directly in the study or consulted):

    1958 A16112-49

    1968 A20381-253

    1980 80422-57

     The Forests, Fish and Wildlife Division of the PEI Department of the Environment,

    Energy and Forestry also provided the LiDAR elevation data for the study site.

     Logistics were facilited by DE Jardine Consulting (contacts with provincial

    governement representatives, access to site photographs).

  • Aerial photography georeferencing and recent coastline evolution of the Rifle Range area (City of Summerside, PEI): Final Report submitted by Géo Littoral Consultants, 08 November 2010

    Géo Littoral Consultants

    geolittoral@gmail.com 1

    INTRODUCTION

    In early September 2010, DE Jardine Consulting , on behalf of the PEI Department of the Environment, Energy and Forestry, contracted Géo Littoral Consultants to produce orthophotos1 for the Rifle Range coastal zone area (an 1,800-metre sector located a few kilometres west of the City of Summerside, see Fig. 1), using historical and recent aerial photographs.

    Figure 1. Location of the Rifle Range study site.

    Due to technical problems encountered in the course of this contract, the orthophotos could not be produced within