Extraction of land-surface parameters and objects from DEMs

Extraction of land-surface parameters and objects from DEMsEdited by TOMISLAV HENGL Institute for Biodiversity and Ecosystem Dynamics University of Amsterdam Amsterdam, The Netherlands .HANNES I. REUTER Institute for Environment and Sustainability DG Joint Research Centre Land Management and Natural Hazards Unit – European Commission Ispra, It...

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petrified wood ...

Petrified wood found only in a specific area of Utah...it's called -yellow catPetrified Wood Specimen (petrified Conifer wood slab)  Arizonapetrified wood ... Zimba...

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Extracting some Geomorphological features from Aerial photograph Vs LIDAR DTM

"The effectiveness of high-resolution topography (0.5 m DTM) derived by LIDAR data in the recognition of geomorphological features in the mountainous landscapes (slides courtesy of Paolo Tarolli)".About Author These are slides of a well known presentation he gave in several conferences, seminars, and lectures since 2006.&nb...

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Determine your imagery to use!!!

After you clearly understood the problem that needs to be solved, you need to determine or choose the right imagery to be obtained for extracting the information we need. There a large number of data types are available to suit various needs.As Examples1. If we are studying thrust belts, we may wish to order 1:1,000,000 B/W single-band Landsat multispectral scanner (MSS) images with 80 m resolution and large area coverage (185 × 185 km) to make a...

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Moroccan Ammonite

Moroccan Ammonite with a calcite replacement of its cellular structure and inlaid sections of synthetic O...

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“Halley’s Comet” Opal

The 2000 carat “Halley’s Comet” Opal - Listed in the Guinness Book of World Records as the largest uncut Black Opal nodule. Found at Lightning Ridge, Australia in 1...

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Phantom Quartz

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Amazing Flourite

12 Fluorita rainbow - South Afr...

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Tiffany Opal Necklace with Demantoid Garnet Accents

Tiffany Opal Necklace with Demantoid Garnet Accents, Janet Annenberg Hooker Hall of Geology, Gems, and Minerals This necklace by Louis Comfort Tiffany sports a black opal from Australia’s Lightning Ridge, along with demantoid garnet accents from Russ...

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Amazing Boulder Opal

10 Boulder Opal - Jundah, Queensland, Austra...

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The stone of spiritual enlightenment

09 Seraphinite Seraphinite is a stone of spiritual enlightenment said to be among the most important stones discovered for connecting and communicating with higher energies. It facilitates conscious awareness on many higher planes, is excellent for accessing self-healing, promotes living from the heart. It cleanses the aura, strengthens, activates and balances all chakras. Causes old patterns of disease or imbalance to fall away, thus creating...

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Scheherazade's Palace ring

03 Gold and silver Scheherazade's Palace ring featuring diamonds, mosaic with turquoise tesserae and a blue tourmaline with an inversely engraved intaglio.By Rachel Garrahan in New YorkScheherazade, the legendary Persian queen, was famed for her storytelling prowess. Enthralling the murderous King Shahryar with tales of courage, mischief and romance over 1,001 nights, she avoided death at his hands and captured his heart in the process. These stories...

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Dendritic agate

07 Dendritic agate 26,20 ct Beautiful sagenitic agate pear cabochon. B. Chatenet's ex-collection.Weight : 26,20 ctSize : 28,0 x 28,0 x 6,2 mmClarity : OpaqueShape : CabochonColor : Grey, blackProvenance : TurkeyTreatment : N...

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8-Black Opal

08Largest Freeform Black Opal In The World1200 gr or 6000 ct Largest Freeform Black Opal In The World. #-COL0017 P.O.A.The huge carving weights 1.2 Kg or 6,000 carats, making it the largest freeform black opal in the world.The carving is 12" long 9" wide and 3" thick at the top tapering down to 1" thickness at the bottom. The color bars go right through and out the back of the pie...

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02 Beautiful Gem Ri...

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Beautiful Rings From Opal

01 Opal and Gold ring02 Opal and Diamond r...

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Amazing Opal

06 This is an American Contra Luz Op...

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Amazing Koroit Opal

05 Koroit O...

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Koroit Opal Nuts - Australia

04 Koroit Opal Nuts – Austra...

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Remote Sensing for Geoscientist

Our Problem Vs Our Image!!!All remote sensing projects begin with a problem we are trying to solve: We may want to find out where the oil is,where to drill, the best way to get to a drill site, and where to build a pipeline or a gas plant for the least cost and with minimal environmental disruption. We may wish to lay out a seismic program most efficiently or find out where a competitor has shot a seismic program. We require a source of water for...

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Tripiche Emerald

Tripiche Emerald - Coscuez, La Peña Blancas, Muzo Mining District, Colom...

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A collection of beautiful rocks and minerals you may ever seen

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Make your rocks look beautiful

Make your rocks look beauti...

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Digital Elevation Models (DEM)

01 Digital Elevation Models (DEM)INTRODUCTIONA DEM is a raster representation of the Altitude provide basic, quantitative information about the Earth’s surface.The accuracy of this data is determined primarily by the resolution (the distance between sample points). Other factors affecting accuracy are data type (integer or floating point) and the actual sampling of the surface when creating the original DEM.Most data providers and professional users...

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