Vertical aerial photographs of Greenland 1:150.000

Uniform vertical aerial photographic coverage of Greenland was achieved between 1978 and 1987 at a scale of 1:150.000 by Mark Hurd Aerial Surveys, Inc., Minneapolis, Minnesota, U.S.A., on behalf of the Danish Geodetic Institute. The photography provided systematic nationwide coverage and formed a fundamental reference dataset for mapping and geodetic purposes.

The black-and-white photographs were acquired using a Wild RC-10 camera equipped with a super wide-angle lens (focal length 88 mm). The aircraft used was a Gates Learjet 25C, flying at approximately 14 km altitude to achieve the image scale of 1:150.000. To minimise blind areas caused by steep mountain slopes in combination with the wide-angle lens, photographs were acquired with 80% forward overlap and 40% side overlap.

Photo centre coordinates were established through aerotriangulation performed by the Danish Geodata Agency. The dataset has subsequently been used for mapping, aerotriangulation and scanning applications.

Identifikation

Titel: Vertical aerial photographs of Greenland 1:150.000

Offentliggørelsestidspunkt

Dato (Publication): 2023-12-03

Ansvarlig myndighed og kontaktoplysninger

Kontakt vedr. service

Organisationsnavn	E-mail adresse	Rolle
The Geological Survey of Denmark and Greenland (GEUS)	bpj@geus.dk	Point of contact

Metadata author

Organisationsnavn	E-mail adresse	Rolle
The Geological Survey of Denmark and Greenland (GEUS)	gis-support@geus.dk	Point of contact

Geografisk udstrækning

Koordinatsystem: WGS 84 / UTM 24N (EPSG:32624)

Nøgleord

Nøgleord: Dataset

Nøgleord: Vertical aerial photographs

Nøgleord: Aerial photography

Nøgleord: Photogrammetry

Nøgleord: Greenland

Type: Theme

Nøgleord: Geoscience and history policy

Type: Theme

Titel: Forskningsemner

Dato (Publication): 2025-11-03

Kode: geonetwork.thesaurus.local.theme.GEUSResearchTopics

Nøgleord: Greenland

Type: Place

Titel: Geografisk

Dato (Publication): 2025-12-11

Kode: geonetwork.thesaurus.local.place.Geoplaces_SKOS_da_en

Kvalitet

Type som metadata beskriver: Dataset

Beskrivelse: The aerial photographs were acquired between 1978 and 1987 by Mark Hurd Aerial Surveys, Inc. for the Danish Geodetic Institute as part of a national aerial photography programme. The survey was designed to provide complete photographic coverage of Greenland at a uniform scale of 1:150,000.

The photographs were acquired with systematic forward and side overlap to ensure stereoscopic coverage and minimise blind areas. Subsequent aerotriangulation was performed by the Danish Geodata Agency to establish accurate photo centre coordinates. The dataset has since been used as a basis for mapping, geodetic and geoscientific applications.