![]() Detailed analysis of the multitemporal DEM enabled the quantification of geodetic surface elevation and mass balance changes. Additionally, in order to account for the volume loss due to lake expansion, the subaqueous lake topography was generated from a recent bathymetric survey and appended to the latest DEM. In this study, digital photogrammetric processing of vertical aerial photographs were used to derive two high-resolution Digital Elevation Models (DEM) of the Tasman Glacier. Since the early 1990s it has undergone a rapid frontal retreat associated with the expansion of a proglacial lake. The Tasman Glacier is New Zealand’s largest body of ice comprising several tributary glaciers. Identify satellite imagery over their region of expertise) willįacilitate enhanced analysis to be undertaken on glacier systems, theirĭistribution, and their impacts on other Earth systems. Our flexible web interfaces to the database, which #Glims glacial map download#"clip-and-ship" function allows users to download only the data they are (Geography Markup Language) and GMT (Generic Mapping Tools). These formats: ESRI shapefiles, KML (Google Earth), MapInfo, GML (using a mouse) or text-field constraints can be downloaded in any of The results of a query based on spatial selection The system allows users to download their selected glacier data in aĬhoice of formats. Outlines from 2002 only, or from Autumn in any year, can be displayed. The interactive map application allows the user to constrain by MapServer application, or overlaid on the virtual globe within GoogleĮarth. The images (browse imagery) can be viewed either as a layer in the Service to the GLIMS community, the database contains metadata on allĪSTER imagery acquired over glacierized terrain. These tools are robust and provide aįlexible and powerful framework for web mapping applications. WFS), and several supporting components such as Proj.4 (a geographic PostGIS (geospatial extensions to the database), MapServer (WMS and System are implemented using Open Source software: Linux, PostgreSQL, Retrieve glacier features in vector format. Sites can display glacier layers from our site over the Internet, or Server (WMS) and Web Feature Server (WFS). Web map server is an Open Geospatial Consortium (OGC) compliant Web Map While the other allows searches based on text-field constraints. ![]() We have implemented two web-based interfaces to the database oneĮnables exploration of the data via interactive maps (web map server), "snapshot" of a glacier is from a specific time, and the database isĭesigned to store multiple snapshots representative of different times. Primarily from satellite imagery, such as from ASTER and Landsat. Geospatial and temporal database of glacier data, composed of glacier The Global Land Ice Measurements from Space (GLIMS) project has built a ![]()
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