An Inventory of Environmental Features in the McMurdo Dry Valleys, Antarctica, and Their Recent Changes Using a Geographic Information System

利用地理信息系统盘点南极洲麦克默多干谷的环境特征及其近期变化

基本信息

  • 批准号:
    9627625
  • 负责人:
  • 金额:
    $ 39.82万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    1996
  • 资助国家:
    美国
  • 起止时间:
    1996-09-15 至 2000-08-31
  • 项目状态:
    已结题

项目摘要

Abstract This project is a collaborative effort among the University of New Hampshire, U.S. Geological Survey, International Center for Antarctic Information and Research (ICAIR), and the Institute for Geological and Nuclear Sciences Ltd. (New Zealand). The purpose of this project is to build a Geographic Information System (GIS) describing the of the Dry Valleys in Antarctica as it existed in 1993-95. To ascertain recent natural changes in this environment, the Principal Investigators will add to the GIS environmental information on a decadal over the preceding forty years. The study region, consisting of the Wright Valley, Victoria Valley, and Taylor Valley, will be mapped at a scale of 1:50,000. Inside the study area, two "supersites" will be studied at a scale of 1:10,000. To support the environmental inventory for 1993-95, the framework will be significantly enhanced. SPOT panchromatic and Landsat Thematic Mapper will be rectified and merged for the entire study region. Topographic data at the 1:50,000, currently referenced to an outdated astronomic datum, will be updated to the current WGS84 satellite datum. Digital orthophotographic maps at 1:50,000 for the entire region and 1:10,000 for the supersites, will be produced. Numerous aerial photographs of the regions will be computerized. Digital basemaps of glacier and hydrologic features will be derived from satellite imagery for the 1:50,000 analysis and from digital orthophotographic maps for the 1:10,000 analysis. The geological inventory will use a genetic systems approach to compile surface and subsurface data on unconsolidated sediments, bedrock, and geomorphic features. In the glacial//hydrological meltwater summary, various lake stream and glacier attributes will be compiled to quantify glacial meltwater production and transportation. To describe changes in the Dry Valleys, environmental data will be compiled into the GIS for 1983-85, 1972-74 and 1957-59. Satellite imagery for 1973-74 and 1983-85 will be rectified and used to provide basemaps of glacier and hydrologic features. Pertinent aerial photography acquired during the latter intervals and during 1957-59 will be inventoried and used to supplement the characterization of glacier and hydrologic features. Pertinent aerial photography acquired during the latter intervals and during 1957-59 will be inventoried and used to supplement the characterization of glacier and hyrdologic features. A comparison of four time periods will reveal physical rates of change in the study area over the past forty years. This research will provide a foundation for long-term environmental management of the Dry Valleys and short-term environmental impact assessments. This research will result in the digital availability of enhanced framework data including topography, satellite imagery, and aerial photography. It will establish an Antarctic scientific data repository that will increase the availability of Antarctic scientific data for scientists and for improved management of science. Finally, the quantification of recent change in the Dry Valleys constitutes a contribution the study of Antarctic climate change.
本项目由美国新罕布什尔大学、美国地质调查局、国际南极信息与研究中心(ICAIR)和新西兰地质与核科学研究所共同完成。该项目的目的是建立一个地理信息系统(GIS),描述1993- 1995年南极洲干谷的情况。为了确定这一环境最近的自然变化,主要研究人员将在地理信息系统中增加过去四十年的环境资料。研究区域包括莱特谷、维多利亚谷和泰勒谷,将以1:50 000的比例绘制地图。在研究区内,两个“超级站点”将以1:10 000的比例进行研究。为了支持1993- 1995年的环境清查,将大大加强该框架。将对整个研究区域的SPOT全色和Landsat专题成像仪进行校正和合并。1:50 000的地形资料,目前是参照一个过时的天文基准面,将更新为目前的WGS84卫星基准面。将为整个地区制作1:50 000的数码正射影图,并为重叠地点制作1:10 000的数码正射影图。这些地区的许多航空照片将电脑化。冰川和水文特征的数字底图将从卫星图像中提取,用于1:5万的分析,从数字正射影图中提取,用于1:10万的分析。地质清单将使用遗传系统方法汇编地表和地下的松散沉积物、基岩和地貌特征数据。在冰川/水文融水摘要中,将编制各种湖泊溪流和冰川属性,量化冰川融水的产生和输送。为了描述干谷的变化,将把1983-85年、1972-74年和1957-59年的环境数据编入地理信息系统。1973-74年和1983-85年的卫星图像将进行校正,用于提供冰川和水文特征的底图。在后一段时间和1957- 1959年期间获得的有关航空摄影将被编目,并用于补充冰川和水文特征的特征。将整理后一段时间和1957- 1959年期间获得的有关航空摄影资料,以补充对冰川和水文特征的描述。四个时期的比较将揭示过去四十年来研究区域的物理变化率。该研究将为干谷的长期环境管理和短期环境影响评价提供基础。这项研究将导致增强框架数据的数字可用性,包括地形、卫星图像和航空摄影。它将建立一个南极科学数据储存库,为科学家增加南极科学数据的可用性,并改进科学管理。最后,对干谷最近变化的量化是对南极气候变化研究的一项贡献。

项目成果

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Michael Prentice其他文献

Michael Prentice的其他文献

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{{ truncateString('Michael Prentice', 18)}}的其他基金

Sociolinguistic Futures between the UK and South Korea
英国和韩国之间的社会语言学未来
  • 批准号:
    ES/W011050/1
  • 财政年份:
    2022
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Research Grant
Collaborative Research: Fluctuations of the West Antarctic Ice Sheet in Relation to Lake History in Taylor Valley, Antarctica, Since the Last Glacial Maximum
合作研究:自末次盛冰期以来,南极洲西部冰盖的波动与南极洲泰勒谷湖泊历史的关系
  • 批准号:
    0540073
  • 财政年份:
    2006
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Standard Grant
Collaborative Research: Fluctuations of the West Antarctic Ice Sheet in Relation to Lake History in Taylor Valley, Antarctica, Since the Last Glacial Maximum
合作研究:自末次盛冰期以来,南极洲西部冰盖的波动与南极洲泰勒谷湖泊历史的关系
  • 批准号:
    0737168
  • 财政年份:
    2006
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Standard Grant
Collaborative Research: Constraining Late Pleistocene Tropical Climates by Dating and Modeling Former Glaciers
合作研究:通过对前冰川进行测年和建模来限制更新世晚期热带气候
  • 批准号:
    0234546
  • 财政年份:
    2003
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Continuing Grant
SGER: Exploratory Research to Calibrate a High-Altitude Lacustrine Geochemical Record to the Instrumental Record of Western Tropical Pacific Convection
SGER:将高海拔湖泊地球化学记录校准为西热带太平洋对流仪器记录的探索性研究
  • 批准号:
    0225181
  • 财政年份:
    2002
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Standard Grant
Papua New Guinea Paleoclimate Research: A Planning Visit
巴布亚新几内亚古气候研究:计划访问
  • 批准号:
    0087930
  • 财政年份:
    2001
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Standard Grant
Collaborative Research: Larsen Ice Shelf: A Model for Antarctic Ice Shelf-Ocean Dynamics
合作研究:拉森冰架:南极冰架海洋动力学模型
  • 批准号:
    0116972
  • 财政年份:
    2001
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Standard Grant
Collaborative Research: West Antarctic Ice-Sheet and Alpine Glacier Variability During the Latest Pleistocene: An Integrated Radar, Drilling and Exposure-Age Study in McMurdo Sound
合作研究:最新更新世期间南极西部冰盖和高山冰川变化:麦克默多海峡综合雷达、钻探和暴露年龄研究
  • 批准号:
    0003792
  • 财政年份:
    2001
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Standard Grant
A Test for Tertiary-Age Deep Fluvial Incision and Strongly Melting Valley-Glaciers in the Dry Valleys Using Ground- Penetrating Radar: A Pilot Project
使用探地雷达对干旱山谷中的第三纪深层河流切割和强烈融化的山谷冰川进行测试:一个试点项目
  • 批准号:
    9725745
  • 财政年份:
    1998
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Standard Grant
High-Resolution Coastal Record of Western Equatorial Pacific and Adjacent Highland Climate During the Last Glacial Cycle
末次冰期期间赤道西太平洋和邻近高原气候的高分辨率海岸记录
  • 批准号:
    9526664
  • 财政年份:
    1995
  • 资助金额:
    $ 39.82万
  • 项目类别:
    Standard Grant

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