Physical oceanography and meteorological measurements in Potter Cove, King George Island, West Antarctic Peninsula during austral summer 2010/2011
Fuente:
PANGAEA
Salvato in:
| Autori principali: | , , , , , , , |
|---|---|
| Natura: | Dataset Open Access |
| Lingua: | en |
| Pubblicazione: |
PANGAEA
2017
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1867170471034748928 |
|---|---|
| author | Monien, Donata Monien, Patrick Brünjes, Robert Widmer, Tatjana Kappenberg, Arne Silva-Busso, Adrian A Schnetger, Bernhard Brumsack, Hans-Jürgen |
| author_facet | Monien, Donata Monien, Patrick Brünjes, Robert Widmer, Tatjana Kappenberg, Arne Silva-Busso, Adrian A Schnetger, Bernhard Brumsack, Hans-Jürgen |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Recent rapid retreat of glacial front lines and the loss of land ice along the Antarctic margins may play an important role in exporting suspended particulate matter (SPM) potentially rich in bioavailable (defined as ascorbate leachable) iron (FeA) to coastal areas of the Southern Ocean. Sediment ablation is an additional source of iron for this high-nutrient low-chlorophyll region. In Potter Cove, King George Island, meltwater streams discharge up to 18 000 mg/l (average 283 mg/l) of slightly weathered, finely ground bedrock particles into coastal waters during the summer. Approximately 15% of this SPM is exported within a low-salinity surface plume into Bransfield Strait. Based on our data, an estimated 12 mg/m**2/yr of FeA is exported from the South Shetland Island land surface (ice-free and subglacial areas) to the surrounding coastal waters. Extrapolated to an area of 2.5x104 km**2, this FeA input is comparable to the contribution from icebergs and c. 240-fold higher than aeolian input via dust. An observed rise in local sediment accumulation rates suggests that glacial erosion has been increasing over recent decades and that (sub-)glacially derived SPM is becoming more important as a source of iron to the Southern Ocean. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_871606 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Physical oceanography and meteorological measurements in Potter Cove, King George Island, West Antarctic Peninsula during austral summer 2010/2011 Monien, Donata Monien, Patrick Brünjes, Robert Widmer, Tatjana Kappenberg, Arne Silva-Busso, Adrian A Schnetger, Bernhard Brumsack, Hans-Jürgen IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica Recent rapid retreat of glacial front lines and the loss of land ice along the Antarctic margins may play an important role in exporting suspended particulate matter (SPM) potentially rich in bioavailable (defined as ascorbate leachable) iron (FeA) to coastal areas of the Southern Ocean. Sediment ablation is an additional source of iron for this high-nutrient low-chlorophyll region. In Potter Cove, King George Island, meltwater streams discharge up to 18 000 mg/l (average 283 mg/l) of slightly weathered, finely ground bedrock particles into coastal waters during the summer. Approximately 15% of this SPM is exported within a low-salinity surface plume into Bransfield Strait. Based on our data, an estimated 12 mg/m**2/yr of FeA is exported from the South Shetland Island land surface (ice-free and subglacial areas) to the surrounding coastal waters. Extrapolated to an area of 2.5x104 km**2, this FeA input is comparable to the contribution from icebergs and c. 240-fold higher than aeolian input via dust. An observed rise in local sediment accumulation rates suggests that glacial erosion has been increasing over recent decades and that (sub-)glacially derived SPM is becoming more important as a source of iron to the Southern Ocean. |
| title | Physical oceanography and meteorological measurements in Potter Cove, King George Island, West Antarctic Peninsula during austral summer 2010/2011 |
| topic | IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica |
| url | https://doi.org/10.1594/PANGAEA.871606 |