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30 December 2004, Volume 16 Issue 4 Previous Issue    Next Issue
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SPECIES AND DISTRIBUTION OF THE BIRDS ON FILDES PENINSULA, KING GEORGE ISLAND, ANTARCTICA 2004, 16 (4):  271-280.  Abstract ( 1352 )   PDF (200KB) ( 1653 )   During the period of 2000/2001—2002/2003 Antarctic summer, fauna of the birds and their distribution were investigated on Fildes Peninsula, King George Island, Antarctica. Total 25 species under 11 families of the birds were recorded for the first time. Among them, 12 species have reproductive activities in study area, including dominant species as followed: Gentoo Penguin (Pygoscelis papua), Wilson's Storm Petrel (Oceanites oceanicus), and common species: Chinstrap Penguin (Pygoscelis antarctica), Giant Petrel (Macronectes giganteus), Cape Petrel (Daption capenis), Antarctic Tern (Sterna vittata) and South Polar Skua (Catharacta antarctica). Related Articles | Metrics

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THE COMPOSITION CHARACTERISTICS OF N-ALKANES IN THE MODERN SEDIMENTS OF THE ARCTIC AND THE COMPARISON WITH THAT OF SEA AREAS OF DIFFERENT LATITUDES 2004, 16 (4):  281-294.  Abstract ( 1853 )   PDF (544KB) ( 1905 )   Gas chromatography of n-alkanes in the surface sediments appears as double peaks in the Chukchi and the Bering Sea. The high carbon peak is at MH nC_~25 —nC_~33 and the low carbon peak locates at MH nC_~16 —nC_~20 in the Chukchi Sea. The high carbon peak is at MH nC_~25 —nC_~27 and the low carbon peak locates at nC_~17 —nC_~22 in the Bering Sea. OEP are 0.9—3.81 and 0.409—3.26, the ratio of C-_~23 /C+_~24 are between 0.18—1.53 and 0.40—2.57; the ratio of TAB_~HC are 0.57—11.35 and 0.32—5.97 respectively. The results suggest that the substance input from terrigenous origin in the Chukchi Sea is larger than that in the Bering Sea. But the productivity in the surface water in the Bering Sea is higher than that in the Chukchi Sea. The composition characteristics of n-alkanes in the modern sediments of the Arctic is compared with that in the Antarctic as well as with that in the Bohai Sea, the Yellow Sea, The East China Sea and the South China Sea. The results indicate that the characteristics of terrigenous origin become weaker while marine biological inputs appear stronger from high to low latitudes. The discrepancy of composition characteristics of n-alkanes in different sea areas have been contributed by the process of sedimentation that influenced by environments and climates. Related Articles | Metrics

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GEOCHEMICAL EVIDENCE FOR THE INFLUENCE OF HISTORICAL SEA BIRD ACTIVITIES ON MOCHOU LAKE SEDIMENTS IN THE ZHONGSHAN STATION AREA, EAST ANTARCTICA 2004, 16 (4):  295-309.  Abstract ( 2073 )   PDF (652KB) ( 3491 )   An 85cm long sediment sequence from Mochou Lake on Mirror Peninsula in the Larsemann Hills, East Antarctica, was investigated for elemental geochemistry, biogeochemistry and strontium isotopic compositions in the acid-insoluble and acid-soluble fractions. The geochemical characters of the elements in the bulk sediments and the ~~ ~87 Sr /~~ ~86 Sr ratios in the acid-soluble fractions suggest that the lake is strongly affected by historical sea bird activities in the catchment area. The depth distributions of amino acids in the sediments show that the sedimentary organic matter is not influenced by post-depositional diagenetic processes, and their concentrations mainly reflect the historical variation in the primary biogenic production produced in the lake. The ~~ ~87 Sr /~~ ~86 Sr ratios in the acid-soluble fraction of the sediments are found to be negative correlation with the concentrations of total amino acid, indicating the enormous role of historical seabirds on nutrient supply into the Mochou Lake. The present results provide a foundation for further studies at a large temporal scale on the reconstruction of lacustrine palaeoecology and the records of palaeoclimate and historical sea bird occupation in the catchment area of the lake. Related Articles | Metrics

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POLAR CLOUD DETECTION AND ANALYSIS OF ETM+ lMAGE 2004, 16 (4):  310-316.  Abstract ( 1821 )   PDF (1101KB) ( 2567 )   Cloud is a large obstacle to remote sensing image preprocessing and analysis at all times. This paper mainly aims at extracting cloud from Enhanced Thematic Mapper Plus(ETM+) images of Grove of Antarctica basis of analysing multi-spectral characteristics of images of Antarctica. The result indicates this method can not only detect the cloud of polar region successfully, but also remove influence from thick clouds partially. Related Articles | Metrics

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SEA ICE THICKNESS AND CONCENTRATION ANALYSIS METHODS IN ARCTIC BASED ON REMOTE SENSING IMAGES 2004, 16 (4):  317-323.  Abstract ( 1559 )   PDF (604KB) ( 2308 )   Based on the sea ice digital videos and photos along the investigation route in the Second Chinese National Arctic Research Expedition (CHINARE) during July and September, 2003, collections of sea ice thickness and concentration in the area of latitude range of 74.11°N—79.56°N and longitude range of 144.17°W—169.95°W are finished. This paper discusses the methods of obtaining ice/snow thicknesses from ship-side videos and ice concentrations from aerial photos, and illustrates the measures should be taken in analysis and in-situ investigation processes to improve the reliability of the parameters. The methods in this paper are somewhat universal and can be used in the research of Bohai Sea and polar sea ice. Related Articles | Metrics

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THE DESIGN AND IMPLEMENTATION OF ARCTIC REGION MULTIMEDIA ELECTRO-MAP 2004, 16 (4):  324-331.  Abstract ( 1400 )   PDF (719KB) ( 1605 )   Multimedia electro-map based on the new application of computer technology and multimedia technology. This article discusses the design and implementation characteristic of ordinary multimedia electro-map, and Arctic region multimedia electro-map was designed and implemented based on the software Atlas 2000. This article has an important reference value for the developing of multimedia electro-map integrated software and the design of electro-map. Related Articles | Metrics

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VARIATION OF CHLOROPHYLL A CONTENTS AT THE WHARF OF THE GREAT WALL STATION, ANTARCTICA 2004, 16 (4):  332-337.  Abstract ( 1694 )   PDF (132KB) ( 1718 )   The variations of chlorophyll a and nutrient contents were investigated at the wharf of the Great Wall Station between December 1999 and March 2000. The chlorophyll a contents were high during the investigation period. The values ranged from 0.603 to 7.667mg/m3 with an average of 2.162mg/m3. With the influence of tide, the highest values occurred both at the beginning and in the middle of months. The nutrient contents and variations were high except for PO_4-P. The order of the contents from high to low was NO_3-N>NH_4-N>NO_2-N>PO_4-P. Related Articles | Metrics

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DISCRIPTION OF DATA COLLECTION OF ARCTIC SEA ICE PHYSICAL PROPERTIES DURING CHINARE-2003 2004, 16 (4):  338-345.  Abstract ( 1765 )   PDF (312KB) ( 2902 )   Between July and September in 2003, the sea ice investigation in Arctic was made to find the relations of Arctic sea ice changing with climate in the second Chinese Arctic Expedition. A series of observations were employed with close collaboration in the fields of sea ice, physical oceanography and boundary layer meteorology. The observed results of the state of ice, ocean and atmosphere will be used to determine the thermal and dynamic exchange between air-ice and ice-ocean over the investigation period. The data collection of Dalian University of Technology, CHINARE-2003 aims to assemble the observational data sets of ice physical properties in order to facilitate the exchange and collaboration between the various research fields and projects in the world. All data will be open in the web of www.chinare.org.cn (Chinese Antarctic & Arctic Research Expedition). The description and interpretation of the data collection are given so as to simplify the access to the data for all users. Related Articles | Metrics