DOCSLIB.ORG

Lynn Canal Wind and Wave Climatology Study for Vessel Operations

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Lynn Canal Wind and Wave Climatology Study for Vessel Operations Alaska Department of Transportation and Public Facilities Juneau Access Improvements SEIS Lynn Canal Wind and Wave Climatology Study for Vessel Operations Prepared for HDR Alaska, Inc. Anchorage, Alaska File No. 11163.03 4 June 2013 Rev. B Consulting Engineers Serving the Marine Community Alaska Department of Transportation and Public Facilities Juneau Access Improvements SEIS Lynn Canal Wind and Wave Climatology Study for Vessel Operations Prepared for HDR Alaska, Inc. Anchorage, Alaska File No. 11163.03 4 June 2013 Rev. B PREPARED: Katherine V. Sultani-Wright, PE Project Engineer CHECKED: Thomas Mathai, PhD Project Manager APPROVED: David W. Larsen, PE Principal-in-Charge Consulting Engineers Serving the Marine Community 1201 Western Avenue, Suite 200, Seattle, Washington 98101-2921 TEL 206.624.7850 FAX 206.682.9117 www.glosten.com Contents Executive Summary ................................................................................................... 1 Section 1 Introduction ............................................................................................ 2 Section 2 Wind Climatology ................................................................................... 3 2.1 Eldred Rock, Alaska ..................................................................................................... 4 2.2 Skagway, Alaska .......................................................................................................... 5 2.3 Point Retreat, Alaska .................................................................................................... 7 2.4 Cape Decision, Alaska .................................................................................................. 7 2.5 Wind Association over Lynn Canal and Chatham Strait .............................................. 8 Section 3 Wave Climatology ................................................................................ 13 3.1 SWAN Model ............................................................................................................. 13 3.1.1 Bathymetry .......................................................................................................... 13 3.1.2 Boundary Conditions ........................................................................................... 14 3.1.3 Wind Speed ......................................................................................................... 15 3.1.4 Points of Interest .................................................................................................. 16 3.2 SWAN Results ............................................................................................................ 17 3.2.1 Monthly Climatology .......................................................................................... 17 3.2.2 Design Waves for Seakeeping ............................................................................. 25 Section 4 Conclusion ........................................................................................... 28 Appendix A – Eldred Rock Wind Statistics Appendix B – Skagway Wind Statistics Appendix C – Point Retreat Wind Statistics Appendix D – Monthly and Annual Wave Statistics Juneau Access Improvements SEIS i The Glosten Associates, Inc. Lynn Canal Wind and Wave Climatology, Rev. B File No 11163.03, 4 June 2013 Revision History Section Rev Description Date Approved All — Rev. — was stamped and signed by K.V. 15 May 2013 BLH Sultani-Wright, PE, Washinton Registration No. 44822, on 15 May 2013. 2.1 A Added comment on data completeness. 28 May 2013 DWL 3.2.1 A Added Table 12, Figure 15, 16, and 17. 4 A Added Conclusion section. 4 B Note added explanation of why effects of 4 June 2013 DWL currents on wave generation are not accounted for. References B Reference 19 added. The stamp and signature above applies only to the content of the current revision. Juneau Access Improvements SEIS ii The Glosten Associates, Inc. Lynn Canal Wind and Wave Climatology, Rev. B File No 11163.03, 4 June 2013 References 1. AMHS Vessel Suitability Study – Task 1 Report: Requirements and Feasibility Studies, The Glosten Associates, File No. 99095, 23 March 2000. 2. Caldwell, R.J., Eakins, L.A., Taylor, L.A., Carignan, K.S., Collins, S., Digital Elevation Models of Southeast Alaska: Procedures, Data Sources and Analysis, 30 September 2010. 3. Coastal Engineering Design and Analysis System – Automated Coastal Engineering System (CEDAS – ACES), (software), Veri-Tech, Inc., Version 4.03, September 2006. 4. Elevations on Station Datum, NOAA National Ocean Service, Station 9452210: Juneau, Alaska, Epoch 1983-2001, NOAA, http://tidesandcurrents.noaa.gov/, accessed on 22 March 2013. 5. Gilleland, E. and Katz, R. W. “New Software to Analyze How Extremes Change Over Time,” Eos Transactions American Geophysical Union, 92 (2), pp. 13-14, January 2011. 6. Global Hourly Surface Data, DS 3505, NOAA National Climatic Data Center, NOAA, http://www.ncdc.noaa.gov/, Point Retreat, USAF 997797, accessed on 24 April 2013. 7. Global Hourly Surface Data, DS 3505, NOAA National Climatic Data Center, NOAA, http://www.ncdc.noaa.gov/, Skagway Airport, USAF 703620, accessed on 22 February 2013. 8. Google Earth (software), version 7.0.3.8542, Google, February 2013. 9. Historical Data, NOAA National Data Buoy Center, NOAA, http://www.ndbc.noaa.gov/station_page.php?station=cdea2, Station CDEA2 – Cape Decision, AK, accessed on 20 March 2013. 10. Historical Data, NOAA National Data Buoy Center, NOAA, http://www.ndbc.noaa.gov/station_page.php?station=eroa2, Station EROA2 – Eldred Rock AK, accessed on 20 March 2013. 11. Historical Data, NOAA National Data Buoy Center, NOAA, http://www.ndbc.noaa.gov/station_page.php?station=prta2, Station PRTA2 – Point Retreat, AK, accessed on 20 March 2013. 12. Juneau Access SEIS – Phase II: Katzehin Wind and Wave Climatology, The Glosten Associates, File No. 11163.02, Revision A, 24 January 2013. 13. Meteorological Observations, NOAA National Ocean Service Station 94522110: Juneau, Alaska, http://tidesandcurrents.noaa.gov/, accessed on 03 January 2013. 14. R Core Team), R: A language and environment for statistical computing, R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.R- project.org/, 2012. 15. Simulating WAves Nearshore (SWAN) (software), Delft University of Technology, version 40.91, The Netherlands, 2012. 16. SWAN User Manual, Delft University of Technology, SWAN Cycle III version 40.91, The Netherlands, 2012. Juneau Access Improvements SEIS iii The Glosten Associates, Inc. Lynn Canal Wind and Wave Climatology, Rev. B File No 11163.03, 4 June 2013 17. State of Alaska Wind Energy Analysis Data, Skagway Airport Station Summary, Alaska Energy Authority, http://www.akenergyauthority.org/PDF%20files/Wind%20Resource%20Assessment/Ska gwayAirport_StationSummary.pdf, accessed on 08 April 2013. 18. Juneau Access Improvements SEIS: Lynn Canal Wind and Wave Climatology – Multi- Year Extremes, The Glosten Associates, Rev. A, 28 May 2013. 19. NOAA Tides and Currents, Current Station Locations and Ranges, http://tidesandcurrents.noaa.gov/currents13/tab2pc4.html#38. Juneau Access Improvements SEIS iv The Glosten Associates, Inc. Lynn Canal Wind and Wave Climatology, Rev. B File No 11163.03, 4 June 2013 Executive Summary This report describes the wind and wave environment appropriate to Alaska Marine Highway System (AMHS) vessel operations in Lynn Canal. Monthly and annual wave statistics were estimated using a modern, third-generation prediction model, Simulating WAves Nearshore (SWAN, Reference 15). All waves in the SWAN domain were assumed to be wind-generated. The wind distribution over the domain was estimated using historical data from Skagway Airport, Eldred Rock, Point Retreat, and Cape Decision. The wind data at each location was correlated with the data from Eldred Rock, and the resulting correlation relationships were used to assign wind speeds to their associated regions of the SWAN domain. Figure 1 shows the statistics of significant wave height in the worst month at the selected field points in the area of interest. Significant wave height, HS, is defined as the average of the highest one-third of all waves in the sea state. Figure 1 Maximum of monthly wave height statistics at selected points For the purposes of a seakeeping analysis, the three southernmost field points, representative of the highest waves, were used to determine a design sea state. A route of approximately 38 nautical miles was assumed to extend from Aaron Island to midway between Eldred Rock and Point Sherman, in which a transit at 15 knots would take 2.5 hours. The average 95th percentile wave height in the worst month, weighted by the distance associated with each of the three southernmost field points, was assumed as the sea state for seakeeping analysis. The design sea state for seakeeping consists of a significant wave height of 2.6 m and a peak wave period of 6.3 seconds. Juneau Access Improvements SEIS 1 The Glosten Associates, Inc. Lynn Canal Wind and Wave Climatology, Rev. B File No 11163.03, 4 June 2013 Section 1 Introduction This report describes the wind and wave environment appropriate to AMHS vessel operations in Lynn Canal. Monthly and annual wave statistics were estimated using a modern, third-generation prediction model, Simulating WAves Nearshore (SWAN, Reference 15). Sea states in this report are defined by the significant wave height and the peak wave period. Significant wave height, HS, is defined as the average of the highest one-third
Load more

Recommended publications
  • Mountain Goat Populations (Smith I 984 )
    STATE OF ALASKA Tony Knowles, Governor DEPARTMENT OF FISH AND GAME Frank Rue, Commissioner DIVISION OF WILDLIFE CONSERVATION Wayne L. Regelin, Director Persons intending to cite this material should receive permission from the author(s) and/or the Alaska Department of Fish and Game. Because most reports deal with preliminary results of continuing studies, conclusions are tentative and should be identified as such. Please give authors credit. Free copies of this report and other Division of Wildlife Conservation publications are available to the public. Please direct requests to our publications specialist: Mary Hicks Publications Specialist ADF&G, Wildlife Conservation P.O. Box 25526 Juneau, AK 99802 (907) 465-4190 The Alaska Department of Fish and Game administers all programs and activities free from discrimination on the bases of race, color, national origin, age, sex, religion, marital status, pregnancy, parenthood, or disability. The department administers all programs and activities in compliance with Title VI of the Civil Rights Act of 1964, Section 504 of the Rehabilitation Act of 1973, Title Il of the Americans with Disabilities Act of 1990, the· Age Discrimination Act of 1975, and Title IX of the Education Amendments of 1972. If you believe you have been discriminated against in any program, activity, or facility, or if you desire further information please write to ADF&G, P.O. Box 25526, Juneau, AK 99802-5526; U.S. Fish and Wildlife Service, 4040 N. Fairfield Drive, Suite 300, Arlington, VA 22203 or O.E.O., U.S. Department of the Interior, Washington DC 20240. For information on alternative formats for this and other department publications, please contact the department ADA Coordinator at (voice) 907­ 465-4120, (TDD) 907-465-3646, or (FAX) 907-465-2440.
    [Show full text]
  • Inventory of Historic Sites and Structures City and Borough Ofjuneau, Alaska
    ---- , Inventory of Historic Sites and Structures City and Borough ofJuneau, Alaska March 1986 Inventory of Historic Sites and Structures City and Borough of Juneau, Alaska Prepared by City and Borough of Juneau Planning Department Thomas J. Peterson, AICP Director Gabrielle E.LaRoche Project Coordinator Graphics-Layout Staff Support Jere Smith, Graphic Artist Theresa Wilcox, Secretary Jeannette St. George TriciaParr, Planner Aide Planning Assistant Yvonne Ellers, Clerk Historical Researcher Jane Wentworth, Planner Photographer Gabrielle E. LaRoche, Planner and Alaska Archives Resource & Records Management, Inc. Glenda Choate Project Manager ResearcherjPhotographer Historical Researcher Diane Brady Victoria Wyatt, Ph.D Inventory of Historic Sites and Structures City of Juneau ~ This document is an update of an earlier publication Alaska Heritage Resources Survey Sites in the Juneau Area April 1980 Funding for this publication comes from the Office of History and Archae­ ology. Division of Parks and Outdoor Recreation. Department of Natural Re­ sources and the Planning Department. City and Borough of Juneau. Juneau. Alaska. 1'1 INVENTORY OF HISTORIC SITES AND STRUCTURES . CITY AND BOROUGH OF JUNEAU Table of Contents Pages J I Methodology The City and Borough of Juneau Planning Department in 1984 developed a Strategy for Historical Preservation which identified a number of historic preservati on act iviti es to be pursued. The department a1 ready was deeply . involved in historic preservation with the designation of the Juneau Downtown Historic District, creation of a Design Review Board, and plans for renovation of Front and Franklin Streets. A strategy to continue preservation planning was needed so that specific tasks could be identified and funding secured.
    [Show full text]
  • JAI FSEIS Chapter 3 Affected Environment
    Juneau Access Improvements Project Final SEIS Affected Environment 3 AFFECTED ENVIRONMENT 3.1 Social and Economic Environment 3.1.1 Land Use The Alaska Department of Transportation and Public Facilities (DOT&PF) updated the 2004 Land Use and Coastal Management Technical Report, presented as Appendix F in the 2005 Supplemental Draft Environmental Impact Statement (Supplemental Draft EIS), and its addendum, presented in Appendix W of the 2006 Final Environmental Impact Statement (Final EIS). The Land Use Technical Report, Revised1 Appendix DD of this Final Supplemental Environmental Impact Statement (SEIS), presents new information from the 2016 Tongass Land and Resource Management Plan (TLRMP), Alaska Department of Fish and Game (ADF&G), City and Borough of Juneau (CBJ), Municipality of Skagway Borough, Haines Borough, National Oceanic and Atmospheric Administration, interviews conducted by Northern Economics, Inc., and personal communications with agency representatives. Additional contacts were made with federal, State, and local officials and private parties to update planning, land management, and land use information. The project area includes federal, State, local, and private lands. Most of the federal lands are within the Tongass National Forest and are managed by the U.S. Forest Service (USFS). The other federal land in the study area is Klondike Gold Rush National Historical Park (NHP) in downtown Skagway, which is administered by the National Park Service (NPS). The principal discussion on Klondike Gold Rush NHP is provided in Section 3.1.1.2. A majority of the State lands in the project area are within the Haines State Forest along West Lynn Canal and are managed by the Alaska Department of Natural Resources (ADNR) Division of Forestry.
    [Show full text]
  • Inside Passage Mapbook
    INSIDE PASSAGE 2020 Mapbook Campgrounds, Lodging & Activities Detailed City Maps www.BellsAlaska.com Inside Passage 1 Front Cover - IP.indd 1 2020-02-24 4:05:54 PM 2 Inside Passage Bell’s Travel Guides Alaska’s Inside Passage See More of Alaska on The Marine Highway encompasses a route so spectacular it has been designated an All- American Road and one of America’s National Scenic Byways. © AMHS ONBOARD OUR SHIPS Passengers can book a cabin that sleeps as many as four people. Cabins are sold per trip, not per person. Cabins and car deck space fill up quickly so reservations are highly recommended. Passengers can also lay out under the solarium, a heated area on deck with unimpeded views, or for a unique adventure, pitch a tent and camp out under the stars. From the deck of the ships, riders can enjoy the view of vivid blue glaciers, snow-capped mountains, active vol- canoes, majestic fjords and lush green forests. Passengers will also find ample opportunities to view wildlife such as porpoise, bald eagles, sea otters, whales and perhaps even bears along the coastline. © AMHS © AMHS © AMHS Book your trip now at www.FerryAlaska.com or The Alaska Marine Highway The Alaska Marine Highway is a state-owned ferry system that operates a fleet of vessels along a scenic route from Washington State to Southwest Alaska. It provides year-round passenger and vehicle transpor- tation to multiple port communities and is a unique option for travelers. Originally designed to provide transportation to road-less areas of Alaska, the Marine Highway offers locals and visitors alike the ability to travel together through some of the most breathtaking scenery in the world.
    [Show full text]
  • MARINE DISASTERS of the ALASKA ROUTE the Thousand
    MARINE DISASTERS OF THE ALASKA ROUTE The thousand mile long channel extending north from Seattle to Skagway, Alaska, with its by-ways among the islands. constitutes an unique waterway, like to none other in the world. The story of the casualties that have happened to the fleet that has been plying on this course for over half a century is a long one. It begins in Russian days, and even before the Muscovite had made his settlement on the Alaskan Islands. The way as traced today has names that recall Vancouver. Quadra, Gray. Butterworth, Valdes. Caamano. and others. all of whom helped to trace out this intricate maze. The first account of a marine accident comes to us from the pages of Vancouverl when in August, 1792. surveying the unknown waters of Queen Cha.rlotte Sound. he says, "we suddenly grounded on a bed of sunken rocks about four in the afternoon." The "Discovery" had struck an unknown rock. and the ship had little more than extricated itself from its unfortunate position than the hidden dangers arrested the progress of the "Chatham." Thus 'began the long line of accidents. some of them disasters, that have marked the coast with wrecks. -While all have not been so fortunate as Vancouver in saving their vessels, the loss of life has been remarkably small when the stretch of coast without a lifesaving station is considered. As late as 1897 the farthest north light-house to shed its beams "cross the way was situated on Entrance Island at Nanaimo Bay, on the Gulf of Georgia.
    [Show full text]