Additional Information

Date published
KeywordsCoastal Studies, Coastal Environment, Lakes, Sea Level Changes, Eustatic Submergence, Shorelines, Shoreline Changes, Climate Effects, Water Levels, Terrain Sensitivity, Paleo-sea Levels, Bathymetry, Seafloor Topography, Shore Features, Barrier Beaches, Spits, Stream Channels, Geophysical Surveys, Acoustic Surveys, Sonar Surveys, Side-scan Sonar, Coastal Erosion, Paleogeography, Channels, Models, Coastal Management, Adaptation, Cores, Geophysical Logging, Surficial Geology/geomorphology, Environmental Geology, Marine Geology, Geophysics
SeriesGeological Survey of Canada, Open File (6,806)
Issue5397
Authors
LanguageThis product is available in English
Product typePublication (7,219)
View full content
MD_Metadata
fileIdentifier
91cdbaab-344d-59db-8b8f-495a3fefa798
language
eng; CAN
characterSet
utf8; utf8
hierarchyLevel
dataset; jeuDonnées
contact
CI_ResponsibleParty
organisationName
Government of Canada; Natural Resources Canada; Information Management Branch; NRCan Library (Earth Sciences)
contactInfo
CI_Contact
phone
CI_Telephone
voice
voice; 1 (613) 9963939
facsimile
1 (613) 9438742
address
CI_Address
deliveryPoint
Physical; 601; Booth Street; 3; 350
city
Ottawa
administrativeArea
Ontario
postalCode
K1A 0E8
country
CANADA
electronicMailAddress
NRCanlibrary@nrcan.gc.ca
role
pointOfContact; contact
dateStamp
2014-06-11T00:15:00-04:00
metadataStandardName
North American Profile of ISO 19115:2003 - Geographic information - Metadata (NAP-Metadata)
metadataStandardVersion
CAN/CGSB-171.100-2009
dataSetURI
http://geogratis.gc.ca/api/en/nrcan-rncan/ess-sst/91cdbaab-344d-59db-8b8f-495a3fefa798
identificationInfo
MD_DataIdentification
citation
CI_Citation
title
The Bras d'Or Lakes, Nova Scotia: seafloor topography, backscatter strength, coastline classification, and sensitivity of coasts to sea-level rise
date
CI_Date
date
2006-12
dateType
publication; publication
identifier
MD_Identifier
code
GEOSCAN ID 223022
citedResponsibleParty
CI_ResponsibleParty
individualName
Shaw, J; Taylor, R B; Patton, E; Potter, D P; Parkes, G S; Hayward, S
contactInfo
CI_Contact
onlineResource
CI_OnlineResource
linkage
http://geoscan.ess.nrcan.gc.ca/cgi-bin/starfinder/0?path=geoscan.fl&id=fastlink&pass=&format=FLFULL&search=R=223022
protocol
HTTP
name
GEOSCAN
description
GEOSCAN is the bibliographic database for scientific publications of the Earth Sciences Sector (ESS) of Natural Resources Canada.
function
information; information
role
author; auteur
presentationForm
documentDigital; documentNumérique
series
CI_Series
name
Geological Survey of Canada, Open File
issueIdentification
5397
otherCitationDetails
doi http://dx.doi.org/10.4095/223022
abstract
(Summary) Research was carried out in the Bras d'Or Lakes, Nova Scotia under the aegis of Project X-29 in NRCan's Geoscience for Ocean Management Program, with additional funding from the Climate Change Impacts and Adaptation Program,. The goal was to provide the scientific information that would help resolve management problems arising from the expected impact of accelerated sea-level rise on the coasts of the Bras d'Or Lakes. The specific objectives of the work were: - Define the recent, present and future trends of water-level increase in the Bras d'Or Lakes. Knowing the recent (last 5000 yr) trend would allow us to understand how rising water levels triggered changes to coastal environments in the lakes. Knowing the modern trend would help us to understand coastal changes over the past 100 years. Some idea of future water levels would be a prerequisite to assessing how the modern coasts will change. - Map the modern coastal environments. - Assess future impacts on the range of coastal environments, particularly those environments that we suspected to be most sensitive and hence vulnerable. - Transfer of information on coastal vulnerability to sea-level rise to stakeholders in GIS formats suitable for their systems. The results of the work are summarized as follows: 1) The lakes were fresh until ca. 6,350 calendar years ago, when rising sea level crossed the -25 m sill and connected them with the ocean. The rate of sea-level rise at the start of inundation was 79 cm/century, and has declined throughout the past 6000 years. Coastal landforms such as spits, barrier beaches, and cuspate forelands were submerged when exposed to the high rate of relative sea-level rise. Submerged shores are visible on multibeam sonar imagery, mainly in the southern lakes, where sediment supplies were abundant. Submerged river networks occur in St. Patricks Channel and Denys Basin. 2) The trend of modern sea-level rise in the region is 36.7 cm/century. Assuming the median increase predicted by the International Panel on Climate Change (2001) (48 cm/century from 1990-2001) and assuming it is distributed equally around the globe, then sea level in the Bras d'Or Lakes will increase by 75 cm over the period 1990-2100 AD. The rate of increase will be 60 cm/century by 2030 AD, 99 cm/century by 2080 AD, and 115 cm/century by 2100 AD. 3) Total shoreline length is 1272 km, or 14.4 % of the Nova Scotian coastline (8811 km). Shorelines are grouped into eleven classes: three types of rock shore, seven types of nonrock shore (unconsolidated), and artificial shores. Coastal barriers make up 12 % of the 5 shoreline. 39 % of these barriers are building and established, 44 % are in the breakdown and collapse phase, 13 % are in transition, and 4 % are artificially constrained. 4) We group the shoreline types into three sensitivity classes, depending on the likelihood that changes will be triggered by sea-level rise. 18.8 % have high sensitivity, 73.9 % have moderate sensitivity, and 7.3 % have low sensitivity. The most sensitive shoreline types are unconsolidated cliffs, coastal barriers, and artificial shores. 5) Coastal barriers will continue to change in their natural cycles of growth and decay over the coming century, but at higher rates. There will be an increasing tendency for complete submergence of coastal barriers by 2030 AD, and a strong likelihood of submergence by 2045 AD. We predict accelerated unconsolidated cliff erosion and increasing effort and expense to maintain coastal defenses, particularly those on barrier beaches that would otherwise migrate or submerge. 6) The recommended response to these future changes is to allow them to take place with as little interference as possible, that is, to allow the coast to respond in a natural way as it did in the past. Having a natural coast will ultimately benefit the region more than having a coastline constrained by coastal protection structures.
credit
Division: GSCA
credit
Program: Geoscience for Oceans Management; Climate Change Impact and Adaptation Program
status
completed; complété
pointOfContact
CI_ResponsibleParty
organisationName
Government of Canada; Natural Resources Canada; Earth Sciences Sector; Canada Centre for Mapping and Earth Observation
contactInfo
CI_Contact
phone
CI_Telephone
voice
voice; 1 (819) 564-4857
voice
voice; 1 (800) 661-2638 (Toll Free in Canada and USA.)
facsimile
1 (819) 564-5698
address
CI_Address
deliveryPoint
Physical; 2144; King Street West; ; Suite 010
city
Sherbrooke
administrativeArea
Quebec
postalCode
J1J 2E8
country
CANADA
electronicMailAddress
geoginfo@NRCan.gc.ca
role
pointOfContact; contact
descriptiveKeywords
MD_Keywords
keyword
earth sciences
keyword
lakes
keyword
models
keyword
geophysics
type
theme; thème
thesaurusName
CI_Citation
title
Government of Canada Core Subject Thesaurus
date
CI_Date
date
2011-05-16
dateType
publication; publication
citedResponsibleParty
CI_ResponsibleParty
organisationName
Library and Archives Canada
role
custodian;conservateur
descriptiveKeywords
MD_Keywords
keyword
coastal studies
keyword
coastal environment
keyword
lakes
keyword
sea level changes
keyword
eustatic submergence
keyword
shorelines
keyword
shoreline changes
keyword
climate effects
keyword
water levels
keyword
terrain sensitivity
keyword
paleo-sea levels
keyword
bathymetry
keyword
seafloor topography
keyword
shore features
keyword
barrier beaches
keyword
spits
keyword
stream channels
keyword
geophysical surveys
keyword
acoustic surveys
keyword
sonar surveys
keyword
side-scan sonar
keyword
coastal erosion
keyword
paleogeography
keyword
channels
keyword
models
keyword
coastal management
keyword
adaptation
keyword
cores
keyword
geophysical logging
keyword
surficial geology/geomorphology
keyword
environmental geology
keyword
marine geology
keyword
geophysics
type
theme; thème
descriptiveKeywords
MD_Keywords
keyword
Nova Scotia
keyword
Bras d'Or Lakes
keyword
Cape Breton Island
keyword
St. Peters
keyword
Chapel Island
keyword
Whycocomagh
keyword
Whycocomagh Bay
keyword
Wagmatcook
keyword
Baddeck
keyword
North Sydney
keyword
Sydney
keyword
Eskasoni
keyword
Iona
keyword
West Bay
keyword
Great Bras d'Or
keyword
Great Bras d'Or Channel
keyword
Little Bras d'Or Channel
keyword
St. Peters Inlet
keyword
St. Peters Canal
keyword
Malagawatch Point
keyword
East Bay
keyword
Barra Strait
keyword
Denys Basin
keyword
St. Patricks Channel
keyword
Kempt Head
keyword
St. Andrews Channel
keyword
St. Ann's Bay
keyword
Atlantic Ocean
type
place; endroit
resourceConstraints
MD_LegalConstraints
useConstraints
copyright; droitAuteur
otherConstraints
© Department of Natural Resources Canada. All rights reserved.
resourceConstraints
MD_LegalConstraints
useConstraints
license; licence
otherConstraints
Open Government Licence - Canada (http://data.gc.ca/eng/open-government-licence-canada)
spatialRepresentationType
vector; vecteur
language
eng; CAN
topicCategory
geoscientificInformation
extent
EX_Extent
geographicElement
EX_GeographicBoundingBox
extentTypeCode
1
westBoundLongitude
-61.2500
eastBoundLongitude
-60.0000
southBoundLatitude
45.6167
northBoundLatitude
46.3833
distributionInfo
MD_Distribution
distributionFormat
MD_Format
name
ZIP
version
6.3.2
specification
http://www.pkware.com/documents/casestudies/APPNOTE.TXT
distributor
MD_Distributor
distributorContact
CI_ResponsibleParty
organisationName
Government of Canada; Natural Resources Canada; Earth Sciences Sector; Canada Centre for Mapping and Earth Observation
contactInfo
CI_Contact
phone
CI_Telephone
voice
voice; 1 (819) 564-4857
voice
voice; 1 (800) 661-2638 (Toll Free in Canada and USA.)
facsimile
1 (819) 564-5698
address
CI_Address
deliveryPoint
Physical; 2144; King Street West; ; Suite 010
city
Sherbrooke
administrativeArea
Quebec
postalCode
J1J 2E8
country
CANADA
electronicMailAddress
geoginfo@NRCan.gc.ca
role
distributor; distributeur
distributionOrderProcess
MD_StandardOrderProcess
fees
Free for download
transferOptions
MD_DigitalTransferOptions
unitsOfDistribution
File
transferSize
466.86293
onLine
CI_OnlineResource
linkage
http://ftp2.cits.rncan.gc.ca/pub/geott/ess_pubs/223/223022/of_5397.zip
protocol
HTTP
name
ZIP
description
Download ZIP (pdf,exe,doc,txt) file through HTTP

Geographic Location

Extent
-61.25, 45.6167, -60, 46.3833

Geographic bounding box extent: detailed latitude and longitude coordinates follow.

North:46.3833, East:-60.0, South:45.6167, West:-61.25

The geographic location is associated with the following regions.

Contact Information

Government of Canada; Natural Resources Canada; Earth Sciences Sector; Canada Centre for Mapping and Earth Observation

Postal address:

2144, King Street West, Suite 010
Sherbrooke, Quebec
CANADA
J1J 2E8

Contact:

Telephone: 1 (819) 564-4857
Telephone: 1 (800) 661-2638 (Toll Free in Canada and USA.)

E-mail: geoginfo@NRCan.gc.ca

License

Open Government Licence - Canada (http://data.gc.ca/eng/open-government-licence-canada)

Data and Resources

The following files are available for download.

Download ZIP (pdf,exe,doc,txt) file through HTTP
466.86 MB
GeoGratis API v1.6.1