نتایج جستجو برای: moraine

تعداد نتایج: 549  

Journal: :Danmarks Geologiske Undersøgelse Serie B 1986

2001
Michael D. Wagner Dimitrios Apostolopoulos Kimberly J. Shillcutt Benjamin Shamah Reid G. Simmons William Whittaker

The Science Autonomy System (SAS) is a hierarchical control architecture for exploration and in situ science that integrates sensing, navigation, classification and mission planning. The Nomad robot demonstrated the capabilities of the SAS during a January 2000 expedition to Elephant Moraine, Antarctica where it accomplished the first meteorite discoveries made by a robot. In this paper, the st...

2013
Jaroslaw Jasiewicz Pawel Netzel Tomasz F. Stepinski

We introduce a concept of content-based landscape retrieval (CBLR). Our CBLR system retrieves morphometrically similar landscapes from a large DEM thus acting as a search engine for landscapes. The system works on the principle of query-byexample, a reference landscape is given and the system outputs a map showing degree of similarity between a reference and all the other local landscapes acros...

2015
Matthew J. WESTOBY Stuart A. DUNNING John WOODWARD Andrew S. HEIN Shasta M. MARRERO Kate WINTER David E. SUGDEN Matthew J. Westoby

In glacial environments particle-size analysis of moraines provides insights into clast origin, transport history, depositional mechanism and processes of reworking. Traditional methods for grain-size classification are labour-intensive, physically intrusive and are limited to patch-scale (1m) observation. We develop emerging, high-resolution groundand unmanned aerial vehicle-based ‘Structure-f...

2004
Willard N. Harman Lee Hingula Claire MacNamara

Lake Moraine (42 50’ 47” N, 75 31’ 39” W), in Madison County in east-central New York State, is an artificially raised impoundment originally formed by the damming of a valley by the deposition of glacial moraine. This 106 ha (261acre) water body comprises two distinct basins separated by Madison County Rt. 87 traversing a causeway between them. A submerged culvert under the highway joins the n...

2013
NICOLÁS E. YOUNG JOERG M. SCHAEFER JASON P. BRINER BRENT M. GOEHRING

We present a Baffin Bay Be production-rate calibration derived from glacial deposits in western Greenland and Baffin Island, and test our results against published Be calibration datasets to develop an Arctic Be production rate. Our calibration comprises: (i) Be measurements from moraine boulders linked to a Cdated moraine at Jakobshavn Isfjord in western Greenland, (ii) an independent and prev...

Journal: :I. J. Robotics Res. 2000
Dimitrios Apostolopoulos Michael D. Wagner Benjamin Shamah Liam Pedersen Kimberly J. Shillcutt William Whittaker

Meteorites are the only significant source of material from other planets and asteroids, and therefore are of immense scientific value. Antarctica’s frozen and pristine environment has proven to be the best place on earth to harvest meteorite specimens. The lack of melting and surface erosion keep meteorite falls visible on the ice surface in pristine condition for thousands of years. In this a...

2000
Liam Pedersen Dimitrios Apostolopoulos William Whittaker

A Bayes network based classifier for distinguishing terrestrial rocks from meteorites is implemented onboard the Nomad robot. Equipped with a camera, spectrometer and eddy current sensor, this robot searched the ice sheets of Antarctica and autonomously made the first robotic identification of a meteorite, in January 2000 at the Elephant Moraine. This paper discusses rock classification from a ...

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