GEOMORPHIC ELEMENTS IN THE DRY VALLEYS REGION, ANTARCTICA : WITH REFERENCE TO GEOMORPHOLOGICAL MAPPING PROGRAM
スポンサーリンク
概要
- 論文の詳細を見る
Geomorphic elements in the Dry Valleys region of McMurdo Oasis in Antarctica are preliminarily examined for the purpose of preparing geomorphic maps. The geomorphological mapping is important for the synthetic representation and analysis of landforms of an area. We are attempting to prepare detailed geomorphological maps of ice-free areas and to estabilsh mapping system in Antarctica. The mapping has been carried out in the Lutzow-Holm Bay region so far. On the other hand, the Dry Valleys region is the largest ice-free area in Antarctica, and many geoscience results, including invaluable chronological data, have been accumulated since the beginning of the research in the region. Therefore, it is the type region to be referred to very frequently in Antarctic geoscience studies. Therefore, it is important to attempt to produce geomorphological maps of the region for the elaboration of the mapping system and the comparative study of landforms in the Antarctic region. This is emphasized because there has been almost no research from the viewpoint of geomorphological map.At present, the work is at the preliminary stage such as aerial photography and map interpretation is under way, using 1 : 50000 USGS topographic maps and about 1 : 52000 vertical aerial photography, taking into account various documented data and a few authors' unpublished data. As the first step, classification of landforms in the Wright Valley is examined in terms of the following elements : 1. Hydrography : 1) Glaciers; mountain (several kinds), outlet, piedmont. 2) Lakes and pools; freshwater, saline, with or without perennial ice cover; 3) Streams; 4) Snow-drift. 2. Morphogenesis, geomorphological processes and their traces : 1) Glacial; (a) denudational-trunk valley, mountain glacial trough, cirque, secondary erosional (overridden?) form, (b) depositional-trunk valley moraine, mountain glacier moraine. 2) Periglacial; patterned ground (polygon), stripe, solifluction lobe, eolian features, tor. 3) Gravitational; talus or colluvium. 4) Meltwater (fluvioglacial) phenomena; stream and/or channel alluvial plain (outwash), alluvial cone, esker? 5) Old strandlines of lakes (and river terrace?). 6) Tectonic and volcanic landforms. 3. Morphology and morphometry : ridge line, valley axis, slope classification, hillock and depression. 4. Bedrock lithology and geological structure.
- 国立極地研究所の論文
著者
-
Moriwaki Kiichi
National Institute of Polar Research
-
Yoshida Yoshio
National Institute of Polar Research
-
Matsuoka Norikazu
Institute Of Geoscience The University Of Tsukuba
-
MATSUOKA Norikazu
Institute of Geoscience, The University of Tsukuba
関連論文
- Holocene lake sediments and sea-level change at Mt. Riiser-Larsen
- Late Quaternary East Antarctic melting event in the Soya Coast region based on stratigraphy and oxygen isotopic ratio of fossil molluscs
- STRATIGRAPHY OF THE LATE QUATERNARY RAISED BEACH DEPOSITS IN THE NORTHERN PART OF LANGHOVDE, LUTZOW-HOLM BAY, EAST ANTARCTICA
- Some Information on Topographic Features and the Characteristics of the Ice Sheet around the Yamato Mountains
- ROCKMAGNETIC ANALYSIS OF SEDIMENTARY SEQUENCES FOR PALEO-ENVIRONMENTAL RESEARCH
- ESR AND TL DATING OF QUATERNARY SEDIMENTS IN THE LUTZOW-HOLM BAY REGION, EAST ANTARCTICA
- A note on the ice sheet fluctuations and problems of Cenozoic studies in Antarctica
- MARINE FOSSILS OF 30-40ka IN RAISED BEACH DEPOSITS, AND LATE PLEISTOCENE GLACIAL HISTORY AROUND LUTZOW-HOLM BAY, EAST ANTARCTICA
- Estimation of the ice thickness of cirque glaciers by the gravimetric survey at the Yamato Mountains, East Antarctica
- Observation of an ice stream on the Soya Coast, Antarctica (abstract)
- WEATHERING STAGE AS A RELATIVE AGE OF TILL IN THE CENTRAL S∅R-RONDANE
- GROUND TEMPERATURE REGIMES AND THEIR RELATION TO PERIGLACIAL PROCESSES IN THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
- Ground temperature regimes and their relation to periglacial processes in the Soer Rondane Mountains, East Antarctica
- Submarine Topography of the Central Part of Lutzow-Holm Bay and around Ongle Islands, Antarctica
- Solifluction resulting from one-sided and two-sided freezing: Field data from Svalbard
- Monitoring of thermal contraction cracking at an ice wedge site, central Spitsbergen
- Some cbservations regarding mountain permafrost in the Japanese Alps
- A laboratory simulation on freezing expansion of a fractured rock : preliminary data
- GEOMORPHIC ELEMENTS IN THE DRY VALLEYS REGION, ANTARCTICA : WITH REFERENCE TO GEOMORPHOLOGICAL MAPPING PROGRAM
- A PRELIMINARY SURVEY BY A SEISMIC PROFILING ACROSS THE GUNNERUS RIDGE OFF THE RIISER-LARSEN PENINSULA, ANTARCTICA
- Present-Day Periglacial Environments in Central Spitsbergen, Svalbard
- WEATHERING STAGE OF TILL AND GLACIAL HISTORY OF THE CENTRAL SOR RONDANE MOUNTAINS, EAST ANTARCTICA
- RECONSTRUCTION OF MAXIMUM GLACIAL EXTENT IN THE CENTRAL S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
- Foreword
- Former ice sheet based on the newly observed glacial landforms and erratics in the central Soer Rondane Mountains, East Antarctica
- FORMER ICE SHEET BASED ON THE NEWLY OBSERVED GLACIAL LANDFORMS AND ERRATICS IN THE CENTRAL SOR RONDANE MOUNTAINS, EAST ANTARCTICA
- Amino acids in some recent sediments of the Syowa Station area (abstract)
- Landform of Mt. Riiser-Larsen, Amundsen Bay, Enderby Land: Results of a preliminary survey
- Preliminary surveys of the Antarctic continental shelf by a seismic profiler in Amundsen Bay and Lutzow-Holm Bay
- Submarine topography of Lutzow-Holm Bay, Antarctica
- Sea ice condition around Syowa Station, Lutzow-Holm Bay, in 1981 (abstract)
- Search for Yamato meteorites in December 1981
- Foreword
- DIGITAL DATA ACQUISITION SYSTEM OF THE JAPANESE ANTARCTIC RESEARCH AIRCRAFT PILATUS PORTER PC-6
- Geomorphic nature of some unconsolidated deposits in the Langhovde and Skarvsnes areas, Soya Coast, East Antarctica
- Physiography of the Prince Olav and the Prince Harald Coasts, East Antarctica (Earth Sciences)
- Physiography of the Prince Olav and the Prince Harald Coasts, East Antarctica
- RESULTS OF SUPPLEMENTARY GLACIO-GEOMORPHOLOGICAL OBSERVATIONS IN ICE-FREE AREAS ON THE SOYA COAST
- Some Consideration on Elevated Coastal Features and Their Dates around Syowa Station, Antarctica
- Holocene raised beaches in the Lutzow-Holm Bay region, East Antarctica