English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
 Local TagsRelease HistoryDetailsSummary
  A simulation study on the effects of glacial meltwater discharge on net primary production in a Greenlandic fjord

Hoshiba, Y., Matsumura, Y., Kanna, N., Ohashi, Y., Sugiyama, S. (2023): A simulation study on the effects of glacial meltwater discharge on net primary production in a Greenlandic fjord, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3805

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020740 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020740_1
Genre: Conference Paper

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Hoshiba, Yasuhiro1, Author
Matsumura, Yoshimasa1, Author
Kanna, Naoya1, Author
Ohashi, Yoshihiko1, Author
Sugiyama, Shin1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

Content

show
hide
Free keywords: -
 Abstract: Terminal glaciers of the Greenland Ice Sheet are bordered by hundreds of fjords and other marine areas. At the terminus of a marine-terminating glacier, a large amount of freshwater and suspended sediment (SS) is injected into the fjord by subglacial discharge. The meltwater discharge entrains lower waters and upwells along the glacier front, thereby supplying nutrients to the upper layers of the fjord. This process can increase biological production in the surface layer during the summer melt season. To investigate the influence of subglacial discharge on the net primary production (NPP) in a glacial fjord, a numerical simulation of the Bowdoin Fjord in Greenland was performed by introducing a lower trophic level ecosystem model into a non-hydrostatic ocean model. Sensitivity experiments were also conducted to estimate the effects on NPP due to possible changes in meltwater discharge and glacier recession that may occur as a consequence of climate change. Results of the experiments showed that the NPP increases with a greater amount of glacier meltwater injected from deeper subglacial outlet. The positive influence of the discharge on NPP is not the case in a region where ample SS supplies inhibit photosynthesis. As meltwater discharge increases and the subglacial outlet becomes shallower, NPP is expected to become 1.2 times larger than that at present. However, if warming further progresses to a critical level, NPP declines to as small as 1/8th to 1/9th of the present value.

Details

show
hide
Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-3805
 Degree: -

Event

show
hide
Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

Legal Case

show

Project information

show

Source 1

show
hide
Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -