View in EDS

Transport of suspended sediment during the breakup of the ice cover, Saint John River, Canada.

Saved in:
Bibliographic Details
Title: Transport of suspended sediment during the breakup of the ice cover, Saint John River, Canada.
Authors: Beltaos, Spyros1 spyros.beltaos@canada.ca, Burrell, Brian C.2 brian.burrell@amecfw.com
Source: Cold Regions Science & Technology. Sep2016, Vol. 129, p1-13. 13p.
Subjects: Suspended sediments, Ice sheets, Rivers, Trace metals, Climate change, Runoff, Mechanical loads, Ice on rivers, lakes, etc.
Geographic Terms: Canada
Abstract: River concentrations of suspended sediment and particulate contaminants, such as trace metals, increase sharply during ice breakup, with potentially detrimental ecological impacts that may be complicated by changing climatic conditions. To enhance the very limited knowledge on this issue, comprehensive data have been collected on the Saint John River (SJR). During breakup, the suspended sediment concentration (SSC) was found to rise gradually, crest, and decline, roughly in step with the runoff, but occasionally spiked to extremely high peaks. The latter ranged from 4.2 to 6.5 times the runoff-generated peak concentrations (RPCs), which ranged from 35 to 150 mg/L. Peak RPCs and individual-event sediment loads generally increased with flow discharge. The sediment spikes were invariably associated with waves resulting from releases of upstream ice jams and with the ensuing ice runs. Concentration–discharge graphs exhibited pronounced clockwise hysteresis, indicative of sediment supply constraints. This feature is more prominent in high-runoff events and typically associated with a lag of 1–3 days between peak concentration and peak discharge, which arrives later. Prediction of SSC via sediment-rating curves is hopeless, but such curves can be helpful in computing loads associated with individual events using a modified approach that terminates load computation 3 days after the arrival of peak discharge. The bulk of the sediment load is delivered on the rising limb of the hydrograph and is likely to be missed in routine sediment monitoring programs. Practical steps to capture this information are suggested. Increases in SJR spring flows during recent decades are projected to continue under a warming climate, resulting in considerable increases of SSCs and loads by the end of this century. [ABSTRACT FROM AUTHOR]
Copyright of Cold Regions Science & Technology is the property of Elsevier B.V. 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
Header DbId: egs
DbLabel: Engineering Source
An: 117010858
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Transport of suspended sediment during the breakup of the ice cover, Saint John River, Canada.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Beltaos%2C+Spyros%22">Beltaos, Spyros</searchLink><relatesTo>1</relatesTo><i> spyros.beltaos@canada.ca</i><br /><searchLink fieldCode="AR" term="%22Burrell%2C+Brian+C%2E%22">Burrell, Brian C.</searchLink><relatesTo>2</relatesTo><i> brian.burrell@amecfw.com</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Cold+Regions+Science+%26+Technology%22">Cold Regions Science & Technology</searchLink>. Sep2016, Vol. 129, p1-13. 13p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Suspended+sediments%22">Suspended sediments</searchLink><br /><searchLink fieldCode="DE" term="%22Ice+sheets%22">Ice sheets</searchLink><br /><searchLink fieldCode="DE" term="%22Rivers%22">Rivers</searchLink><br /><searchLink fieldCode="DE" term="%22Trace+metals%22">Trace metals</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br /><searchLink fieldCode="DE" term="%22Runoff%22">Runoff</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+loads%22">Mechanical loads</searchLink><br /><searchLink fieldCode="DE" term="%22Ice+on+rivers%2C+lakes%2C+etc%2E%22">Ice on rivers, lakes, etc.</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Canada%22">Canada</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: River concentrations of suspended sediment and particulate contaminants, such as trace metals, increase sharply during ice breakup, with potentially detrimental ecological impacts that may be complicated by changing climatic conditions. To enhance the very limited knowledge on this issue, comprehensive data have been collected on the Saint John River (SJR). During breakup, the suspended sediment concentration (SSC) was found to rise gradually, crest, and decline, roughly in step with the runoff, but occasionally spiked to extremely high peaks. The latter ranged from 4.2 to 6.5 times the runoff-generated peak concentrations (RPCs), which ranged from 35 to 150 mg/L. Peak RPCs and individual-event sediment loads generally increased with flow discharge. The sediment spikes were invariably associated with waves resulting from releases of upstream ice jams and with the ensuing ice runs. Concentration–discharge graphs exhibited pronounced clockwise hysteresis, indicative of sediment supply constraints. This feature is more prominent in high-runoff events and typically associated with a lag of 1–3 days between peak concentration and peak discharge, which arrives later. Prediction of SSC via sediment-rating curves is hopeless, but such curves can be helpful in computing loads associated with individual events using a modified approach that terminates load computation 3 days after the arrival of peak discharge. The bulk of the sediment load is delivered on the rising limb of the hydrograph and is likely to be missed in routine sediment monitoring programs. Practical steps to capture this information are suggested. Increases in SJR spring flows during recent decades are projected to continue under a warming climate, resulting in considerable increases of SSCs and loads by the end of this century. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Cold Regions Science & Technology is the property of Elsevier B.V. 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=117010858
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.coldregions.2016.05.006
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 1
    Subjects:
      – SubjectFull: Suspended sediments
        Type: general
      – SubjectFull: Ice sheets
        Type: general
      – SubjectFull: Rivers
        Type: general
      – SubjectFull: Trace metals
        Type: general
      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Runoff
        Type: general
      – SubjectFull: Mechanical loads
        Type: general
      – SubjectFull: Ice on rivers, lakes, etc.
        Type: general
      – SubjectFull: Canada
        Type: general
    Titles:
      – TitleFull: Transport of suspended sediment during the breakup of the ice cover, Saint John River, Canada.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Beltaos, Spyros
      – PersonEntity:
          Name:
            NameFull: Burrell, Brian C.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 09
              Text: Sep2016
              Type: published
              Y: 2016
          Identifiers:
            – Type: issn-print
              Value: 0165232X
          Numbering:
            – Type: volume
              Value: 129
          Titles:
            – TitleFull: Cold Regions Science & Technology
              Type: main
ResultId 1