Download as PDF, PPTX
Uploaded byriseagrant
Boothroyd climate change-symposium-18nov2011-final
This document discusses climate change, coastal hazards, and sea level rise in Rhode Island. It provides background on past glaciation and ice sheets in the region. It then examines current coastal hazards from storms and erosion exacerbated by sea level rise. Projections show global sea level rising significantly by 2100 due to climate change, threatening Rhode Island's coasts with flooding and barrier migration. Adaptation strategies may be needed to address these coastal impacts of climate change.
More Related Content
Similar to Boothroyd climate change-symposium-18nov2011-final
![Getting Started with Apache Spark: Big Data Made Simple [Free Meetup]](https://cdn.slidesharecdn.com/ss_thumbnails/apachesparkgettingstarted-260203175547-8361bcc3-thumbnail.jpg?width=640&height=640&fit=bounds)
Boothroyd climate change-symposium-18nov2011-final
- 1. CLIMATE CHANGE, COASTAL GEOLOGIC HAZARDS and SEA-LEVEL RISE URI Climate Change Symposium 18 November 2011 Jon C. Boothroyd Rhode Island State Geologist, Research Professor Emeritus – Quaternary Geology ------------- Rhode Island Geological Survey and Department of Geosciences College of the Environment and Life Sciences University of Rhode Island jon_boothroyd@uri.edu
- 2. Southern New England,Long Island, Continental Shelf ~ 26,000 yBP Map Generated By: BA Oakley and JC Boothroyd
- 3. THE LAST NORTHAMERICAN ICE SHEETS CORDILLERAN LAURENTIDE - You are here After Dyke & Prest, 1987
- 4. MALASPINA GLACIER –Northeast Gulf of Alaska - An Analog “The size of Rhode Island”
- 5. Oakley, 2011 You are here Ice margins modified from: Dyke and Prest, 1987 Ridge, 2010; Goss, 1993 Smith, 2010
- 6. Oakley, 2011 Ice margins modified from: Dyke and Prest, 1987 Ridge, 2010; Goss, 1993 Smith, 2010
- 7. Oakley, 2011 Charlestown Moraine Ice margins modified from: Dyke and Prest, 1987 Ridge, 2010; Goss, 1993 Smith, 2010
- 8. Ice margins modifiedfrom: Dyke and Prest, 1987 Ridge, 2010; Goss, 1993 Smith, 2010 Oakley, 2011
- 9. Ice margins modifiedfrom: Dyke and Prest, 1987 Ridge, 2010; Goss, 1993 Smith, 2010 Oakley, 2011
- 10. Oakley, 2011 Ice margins modified from: Dyke and Prest, 1987 Ridge, 2010; Goss, 1993 Smith, 2010
- 11. Eustatic Sea-Level Rise + Isostatic Rebound Laurentide at Ice Sheet? Laurentide 2m.100yr-1 Ice Sheet? Block Island 2m.100yr-1 Antarctic Ice Antarctic Ice Sheet? Sheet? -1 2-5m.100yr 2-5m.100yr-1 Explanation - 390 ft Oakley and Boothroyd, submitted 2011
- 12. -165 ft BeginMeltwater Pulse 1B Post-Glacial Lake Atlantic Ocean
- 13. -130 ft EndMeltwater Pulse 1B Post-Glacial Lake Estuary Atlantic Ocean
- 14. When Contemplating RhodeIsland Coastal Geologic Hazards One Must Consider: • Extratropical Cyclones (“Nor’easters”) • Hurricanes (Tropical Cyclones) • and ……. Sea Level Rise
- 15. When Contemplating RhodeIsland Coastal Geologic Hazards Which Give Rise to these Processes: • Frontal Erosion – from Breaking Waves and Swash • Storm-Surge Overwash • Elevated MHHW into the Future
- 16. When Contemplating RhodeIsland Coastal Geologic Hazards The Scale of Processes are: • Breaking Waves – 3 to 10+ feet at shoreline • Storm-Surge Overwash – 1 to 10+ feet water depth across shore zone • Sea-Level Rise – 0.14 inches per year at present
- 17. The Sea MayBe Rising Long Term – But….. Instantaneous Storm Surges Elevate Sea Level Now
- 18. Narragansett Pier Seawall– Patriots Day 2007 WPRI.com 16 apr 2007
- 19. Patriots Day ExtratropicalStorm – April 2007 Newport Tide Gauge SET UP PREDICTED http://tidesandcurrents.noaa.gov/ STORM SURGE data_menu.shtml?stn=8452660%20Newport,%20RI&type=Tide+Data
- 20. Overwash - Browning Cottages RE Hehre
- 21. Frontal Erosion -Browning Cottages BA Oakley
- 22. Frontal Erosion 1939-2006- Browning Cottages 2011 2006 1939
- 23. Charlestown Beach Overwash RE Hehre
- 24. Charlestown Beach –Hurricane Bob 1991 Washover Fan Deposition Removal is a Bad Idea ……. Barriers Naturally Retreat Landward and Upward Aug 1991
- 25. Watch Hill –Hurricane Carol, 1954 But… Sometimes there is no alternative Providence Journal, 1954
- 26. A General CoastalBarrier Model for Rhode Island
- 27. Napatree Barrier –Westerly, RI Little Narragansett Bay Watch Hill Hehre and Boothroyd, 2007
- 28. Napatree Barrier –Shoreline Change Maps 2004 – Sound Side 1939 – Sound Side 1939 – 2004 – Ocean Side Ocean Side Hehre and Boothroyd, 2007
- 29. Tidal Datums Newport MHHW = 3.85 ft 3 “Zero” in some NAVD 1988 = 2.05 ft data sets 2 MSL = 1.74ft New MSL and on maps NGVD 1929 = 1.18 ft Old “MSL” 1 MLLW = 0.0 ft 0 -1 Adapted from: www.ngs.noaa.gov/newsys-cgi- bin/ngs_opsd.prl?PID=LW0493&E POCH=1983-2001
- 30. How High willthe Water Be? Boothroyd and Hehre 2008 9.46 Feet Above MHHW Tidal Heights Newport MHHW = 3.85 ft MLLW = 0.0 ft Adapted from: www.ngs.noaa.gov/newsys-cgi- bin/ngs_opsd.prl?PID=LW0493&EPOCH=1983-2001
- 31. Frequency? Next Month or Next Year Tropical Storm Irene Aug 2011 Adapted from NOAA; USACE 1988; Hehre 2007
- 32. Lastly, Climate Change and the Future Shore Zone of Rhode Island
- 33. Greenland Outlet Glaciers Changefrom Polythermal to Warm Based A Key to Future Sea-Level Rise
- 34.
- 35. HEIGHT NOW Adapted from: http://tidesandcurrents.noaa.gov/sltrends/ sltrends_station.shtml?stnid=8452660%20Newport,%20RI Boothroyd 2011
- 36. Observed Global SeaLevel Rise ... Accelerating IPCC 18 cm rise since 1900 2001 Current rate: estimate 3.3 cm per decade Rahmstorf, Cazenave, Church, Hansen, Keeling, Parker and Somerville (Science 2007)
- 37. Global Sea LevelLinked to Global Temperature Projection of Sea-Level Rise 1990 - 2100 Using IPCC 2007 Temperature Projections Extreme Projection IPCC 2007 Vermeer and Rahmstorf, 2009, PNAS, v106, p 21537-21532
- 38. Height above NOW New Estimate Low 3.3 ft Range 100 cm 1.1 ft 35 cm 2050
- 39. Height above NOW New 140 cm 4.6 ft Estimate Mid 1.4 ft 42 cm 2050
- 40. 6.2 ft Height above NOW 190 cm New Estimate High Range 1.6 ft 50 cm 2050
- 41. Misquamicut Headland –100 Yr Hurricane Surge + 3 feet Sea Level Rise Present Outdated Flood Map
- 42. Misquamicut – US1A – Westerly 1938 Hurricane - Debris Swath Debris Swath after Barrier Sea-Level Rise Providence Journal, 1938
- 43. Ninigret – GreenHill Lagoons 2003 – 2004 Orthophoto Today
- 44. Ninigret – GreenHill Lagoons 1938 Storm Surge + SL Rise after 1938 11 ft above MHHW Today
- 45. Ninigret – GreenHill Lagoons 1938 Storm Surge + SL Rise 11 ft above MHHW Today Frosty Drew Foster Cove Area
- 46. Ninigret – GreenHill Lagoons 2003 – 2004 Orthophoto Today
- 47. Ninigret – GreenHill Lagoons 2100 Inundation – 5 ft 200 ft Barrier Migration Projected
- 48. Ninigret – GreenHill Lagoons 2100 Inundation – 5 ft 200 ft Barrier Migration Projected Frosty Drew Foster Cove Area
- 49. Wickford Marketplace –In-Place Inundation “The Bathtub Ring” Today 10 Sept 2010 Teresa Crean
- 50.
- 52. THE HOCKEY STICK The Message Temp lags CO2 Medieval Warm Period Little Ice Age Moberg et al, 2005