scholarly journals Multibeam Bathymetry and Distribution of Clay Minerals on Surface Sediments of a Small Bay in Terra Nova Bay, Antarctica

Minerals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 72
Author(s):  
Jaewoo Jung ◽  
Youngtak Ko ◽  
Joohan Lee ◽  
Kiho Yang ◽  
Young Kyu Park ◽  
...  
Keyword(s):  
Transport Process ◽  
Surface Sediments ◽  
Volcanic Rocks ◽  
Multibeam Bathymetry ◽  
Seafloor Morphology ◽  
Terra Nova Bay ◽  
Mineralogical Characteristics ◽  
Terra Nova ◽  
Raised Beaches ◽  
Mineral Analyses

The second Antarctic station of South Korea was constructed at Terra Nova Bay, East Antarctica, but local seafloor morphology and clay mineralogical characteristics are still not fully understood. Its small bay is connected to a modern Campbell Glacier, cliffs, and raised beaches along the coastline. Fourteen sampling sites to collect surface sediments were chosen in the small bay for grain size and clay mineral analyses to study the sediment source and sediment-transport process with multibeam bathymetry and sub-bottom profiles. Under the dominant erosional features (streamlined feature and meltwater channel), icebergs are the major geological agent for transport and deposition of coarse-sized sediments along the edge of glaciers in summer, and thus the study area can reveal the trajectory of transport by icebergs. Glacier meltwater is an important agent to deposit the clay-sized detritus and it results from the dominance of the illite content occurring along the edge of Campbell Glacier Tongue. The high smectite content compared to Antarctic sediments may be a result of the source of the surrounding volcanic rocks around within the Melbourne Volcanic Province.

Holocene raised beaches at Terra Nova Bay, Victoria Land, Antarctica

1991 ◽  
Vol 36 (2) ◽  
pp. 157-177 ◽  
Author(s):  
Carlo Baroni ◽  
Giuseppe Orombelli
Keyword(s):  
Sea Level ◽  
Level Curve ◽  
Relative Sea Level ◽  
Stratigraphic Sequence ◽  
Large Reservoir ◽  
Terra Nova Bay ◽  
Victoria Land ◽  
Nesting Sites ◽  
Terra Nova ◽  
Raised Beaches

AbstractMore than 40 14C dates for raised beaches at Terra Nova Bay ranging from the present to 7505 ± 230 yr B.P. supply minimum or maximum limiting ages that bracket a relative sea-level curve for this part of Victoria Land. Most samples consist of guano and penguin remains collected from abandoned nesting sites on beach deposits. Up to four 14C dates in stratigraphic sequence have been obtained in two soil profiles. Other samples consist of marine shells collected both within and on the surface of raised beaches. All 14C ages for organisms that lived or fed in circumantarctic waters were corrected for a large reservoir effect. The calibrated ages delimit a first relative sea-level curve for Victoria Land. Rates of uplift ranged from about 10 mm/yr following deglaciation to about 2 mm/yr in the last 3 millennia. Widespread presence of Adélie penguin nesting sites suggests that Terra Nova Bay was deglaciated before 7065 ± 250 yr B.P. (7059/6439 cal yr B.P.), when environmental conditions in the coastal area were similar to the present ones.

Particulate organic matter release below melting sea ice (Terra Nova Bay, Ross Sea, Antarctica): Possible relationships with zooplankton

2021 ◽  
pp. 103510
Author(s):  
Alessandro Cau ◽  
Claudia Ennas ◽  
Davide Moccia ◽  
Olga Mangoni ◽  
Francesco Bolinesi ◽  
...  
Keyword(s):  
Organic Matter ◽  
Sea Ice ◽  
Particulate Organic Matter ◽  
Ross Sea ◽  
Terra Nova Bay ◽  
Terra Nova

scholarly journals A comparison between polynya area and associated ice production with mooring-based measurements of temperature, salinity and currents in the southwestern Ross Sea, Antarctica

2011 ◽  
Vol 52 (57) ◽  
pp. 291-300 ◽  
Author(s):  
Stefan Kern ◽  
Stefano Aliani
Keyword(s):  
Ross Sea ◽  
Time Lag ◽  
Ice Formation ◽  
Terra Nova Bay ◽  
In Situ Observations ◽  
Satellite Microwave ◽  
Terra Nova ◽  
Ice Production ◽  
The Impact

AbstractWintertime (April–September) area estimates of the Terra Nova Bay polynya (TNBP), Antarctica, based on satellite microwave radiometry are compared with in situ observations of water salinity, temperature and currents at a mooring in Terra Nova Bay in 1996 and 1997. In 1996, polynya area anomalies and associated anomalies in polynya ice production are significantly correlated with salinity anomalies at the mooring. Salinity anomalies lag area and/or ice production anomalies by about 3 days. Up to 50% of the variability in the salinity at the mooring position can be explained by area and/or ice production anomalies in the TNBP for April–September 1996. This value increases to about 70% when considering shorter periods like April–June or May–July, but reduces to 30% later, for example July–September, together with a slight increase in time lag. In 1997, correlations are smaller, less significant and occur at a different time lag. Analysis of ocean currents at the mooring suggests that in 1996 conditions were more favourable than in 1997 for observing the impact of descending plumes of salt-enriched water formed in the polynya during ice formation on the water masses at the mooring depth.

scholarly journals Diesel oil and PCB-degrading psychrotrophic bacteria isolated from Antarctic seawaters (Terra Nova Bay, Ross Sea)

2004 ◽  
Vol 23 (2) ◽  
pp. 141-146 ◽  
Author(s):  
Maria De Domenico ◽  
Angelina Lo Giudice ◽  
Luigi Michaud ◽  
Marcello Saitta ◽  
Vivia Bruni
Keyword(s):  
Ross Sea ◽  
Diesel Oil ◽  
Psychrotrophic Bacteria ◽  
Terra Nova Bay ◽  
Terra Nova

Particulate matter composition and bacterial distribution in Terra Nova Bay (Antarctica) during summer 1989–1990

Polar Biology ◽  
1995 ◽  
Vol 15 (6) ◽  
pp. 393-400 ◽  
Author(s):  
M. Fabiano ◽  
R. Danovaro ◽  
E. Crisafi ◽  
R. La Ferla ◽  
P. Povero ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Terra Nova Bay ◽  
Terra Nova

scholarly journals Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions

PLoS ONE ◽  
2016 ◽  
Vol 11 (4) ◽  
pp. e0153254 ◽  
Author(s):  
Roksana Majewska ◽  
Peter Convey ◽  
Mario De Stefano
Keyword(s):  
Ross Sea ◽  
Epiphytic Diatoms ◽  
Terra Nova Bay ◽  
Terra Nova

Significance of selected halocarbons monitoring in air samples collected in the Terra Nova Bay region (northern Victoria Land, Antarctica)

1999 ◽  
Vol 11 (2) ◽  
pp. 261-264 ◽  
Author(s):  
Filippo Mangani ◽  
Michela Maione ◽  
Luciano Lattanzi
Keyword(s):  
Ross Sea ◽  
Atmospheric Concentration ◽  
Air Samples ◽  
Terra Nova Bay ◽  
Victoria Land ◽  
Rate Of Increase ◽  
Terra Nova ◽  
Concentration Levels

CCl3F (or CFC-11) and CCl2F2 (or CFC-12) were determined in air samples collected, during subsequent summer Antarctic campaigns, in different sampling sites in the Ross Sea Region. The samples were analysed by GC-ECD after enrichment. Data obtained since 1988–89 were plotted to observe the trend of CFCs atmospheric concentration levels. A decrease in the rate of increase of CFC-12 concentration was observed, whilst the concentration of CFC-11 was actually seen to be decreasing.

Shallow-water benthic hydroids from Tethys Bay (Terra Nova Bay, Ross Sea, Antarctica)

Polar Biology ◽  
2013 ◽  
Vol 36 (5) ◽  
pp. 731-753 ◽  
Author(s):  
Álvaro L. Peña Cantero ◽  
Ferdinando Boero ◽  
Stefano Piraino
Keyword(s):  
Shallow Water ◽  
Ross Sea ◽  
Terra Nova Bay ◽  
Terra Nova
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