Effects of Sea Level Rise on Storm Surge Flooding and Current Speeds in New Hampshire Estuaries.
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| Title: | Effects of Sea Level Rise on Storm Surge Flooding and Current Speeds in New Hampshire Estuaries. |
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| Authors: | Lippmann, Thomas C.1 (AUTHOR) lippmann@ccom.unh.edu, Simpson, Anna E.2 (AUTHOR) simpanna@oregonstate.edu, Cook, Salme E.3 (AUTHOR) sc10@wildcats.unh.edu, Kirshen, Paul4 (AUTHOR) paul.kirshen@umb.edu |
| Source: | Journal of Waterway, Port, Coastal & Ocean Engineering. Feb2021, Vol. 147 Issue 2, p1-16. 16p. |
| Subjects: | Sea level, Water power, Tidal flats, Storm surges, Estuaries, Energy dissipation, Wave energy |
| Geographic Terms: | New Hampshire |
| Abstract: | The effects of sea level rise on storm surge energy transformation and flood and ebb current magnitudes are examined in two distinct New Hampshire estuarine systems. The Great Bay estuary is characterized by strong tidal dissipation along a long (13 km) and deep (20–25 m) rocky channel (ebb-dominated Piscataqua River) that connects to a large (flood-dominated) estuarine bay with extensive mudflat areas, whereas the (ebb-dominated) Hampton/Seabrook estuary has minimal tidal dissipation through a short (1 km) and shallow (5–7 m) sandy inlet that connects to an extensive salt marsh with narrow tidal channels. Numerical simulations are conducted using the finite-volume coastal ocean model (FVCOM) with forcing provided by the tides, with and without 0.01 annual exceedance probability storm surge estimated by the North Atlantic Comprehensive Coastal Study (NACCS) and further with and without sea level rise scenarios for year 2060 in Hampton/Seabrook (0.73 m) and 2100 in Great Bay (1.92 m). Results for the Great Bay estuary show that although the maximum sea surface elevation is higher during storm events, upstream linear wave energy loss (about 50%) of the storm surge with and without sea level rise is similar to tidal wave energy loss under present nonstorm conditions. Corresponding depth-integrated currents increase by 10%–30% with sea level rise, 23%–52% with the storm surge, and 32%–97% for the combined event. However, results from the Hampton/Seabrook estuary show that energy loss through the inlet increases from 2% to 4% for no storm and present-day sea level to 30%–40% for storm surge with sea level rise, partially mitigating inland inundation. Depth-integrated current magnitudes in the Hampton/Seabrook inlet increase by a factor of 4 under sea level rise and storm surge. Model results suggest that sea level rise has significant impacts on current speeds in both estuaries and that the energy decay of the tidal wave and storm surge depends on the nature of the estuarine system, with greater change associated with estuaries with shallow, narrow inlets somewhat reducing the effects of inland flooding. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Waterway, Port, Coastal & Ocean Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 148749854 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effects of Sea Level Rise on Storm Surge Flooding and Current Speeds in New Hampshire Estuaries. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lippmann%2C+Thomas+C%2E%22">Lippmann, Thomas C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lippmann@ccom.unh.edu</i><br /><searchLink fieldCode="AR" term="%22Simpson%2C+Anna+E%2E%22">Simpson, Anna E.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> simpanna@oregonstate.edu</i><br /><searchLink fieldCode="AR" term="%22Cook%2C+Salme+E%2E%22">Cook, Salme E.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> sc10@wildcats.unh.edu</i><br /><searchLink fieldCode="AR" term="%22Kirshen%2C+Paul%22">Kirshen, Paul</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> paul.kirshen@umb.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Waterway%2C+Port%2C+Coastal+%26+Ocean+Engineering%22">Journal of Waterway, Port, Coastal & Ocean Engineering</searchLink>. Feb2021, Vol. 147 Issue 2, p1-16. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Sea+level%22">Sea level</searchLink><br /><searchLink fieldCode="DE" term="%22Water+power%22">Water power</searchLink><br /><searchLink fieldCode="DE" term="%22Tidal+flats%22">Tidal flats</searchLink><br /><searchLink fieldCode="DE" term="%22Storm+surges%22">Storm surges</searchLink><br /><searchLink fieldCode="DE" term="%22Estuaries%22">Estuaries</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+dissipation%22">Energy dissipation</searchLink><br /><searchLink fieldCode="DE" term="%22Wave+energy%22">Wave energy</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22New+Hampshire%22">New Hampshire</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The effects of sea level rise on storm surge energy transformation and flood and ebb current magnitudes are examined in two distinct New Hampshire estuarine systems. The Great Bay estuary is characterized by strong tidal dissipation along a long (13 km) and deep (20–25 m) rocky channel (ebb-dominated Piscataqua River) that connects to a large (flood-dominated) estuarine bay with extensive mudflat areas, whereas the (ebb-dominated) Hampton/Seabrook estuary has minimal tidal dissipation through a short (1 km) and shallow (5–7 m) sandy inlet that connects to an extensive salt marsh with narrow tidal channels. Numerical simulations are conducted using the finite-volume coastal ocean model (FVCOM) with forcing provided by the tides, with and without 0.01 annual exceedance probability storm surge estimated by the North Atlantic Comprehensive Coastal Study (NACCS) and further with and without sea level rise scenarios for year 2060 in Hampton/Seabrook (0.73 m) and 2100 in Great Bay (1.92 m). Results for the Great Bay estuary show that although the maximum sea surface elevation is higher during storm events, upstream linear wave energy loss (about 50%) of the storm surge with and without sea level rise is similar to tidal wave energy loss under present nonstorm conditions. Corresponding depth-integrated currents increase by 10%–30% with sea level rise, 23%–52% with the storm surge, and 32%–97% for the combined event. However, results from the Hampton/Seabrook estuary show that energy loss through the inlet increases from 2% to 4% for no storm and present-day sea level to 30%–40% for storm surge with sea level rise, partially mitigating inland inundation. Depth-integrated current magnitudes in the Hampton/Seabrook inlet increase by a factor of 4 under sea level rise and storm surge. Model results suggest that sea level rise has significant impacts on current speeds in both estuaries and that the energy decay of the tidal wave and storm surge depends on the nature of the estuarine system, with greater change associated with estuaries with shallow, narrow inlets somewhat reducing the effects of inland flooding. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Waterway, Port, Coastal & Ocean Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1061/(ASCE)WW.1943-5460.0000613 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1 Subjects: – SubjectFull: Sea level Type: general – SubjectFull: Water power Type: general – SubjectFull: Tidal flats Type: general – SubjectFull: Storm surges Type: general – SubjectFull: Estuaries Type: general – SubjectFull: Energy dissipation Type: general – SubjectFull: Wave energy Type: general – SubjectFull: New Hampshire Type: general Titles: – TitleFull: Effects of Sea Level Rise on Storm Surge Flooding and Current Speeds in New Hampshire Estuaries. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lippmann, Thomas C. – PersonEntity: Name: NameFull: Simpson, Anna E. – PersonEntity: Name: NameFull: Cook, Salme E. – PersonEntity: Name: NameFull: Kirshen, Paul IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 0733950X Numbering: – Type: volume Value: 147 – Type: issue Value: 2 Titles: – TitleFull: Journal of Waterway, Port, Coastal & Ocean Engineering Type: main |
| ResultId | 1 |
