Search Results - "Ugalde, Hernan"

Integrated Geological and Geophysical Mapping of a Carbonatite-Hosting Outcrop in Siilinjärvi, Finland, Using Unmanned Aerial Systems by Jackisch, Robert, Lorenz, Sandra, Kirsch, Moritz, Zimmermann, Robert, Tusa, Laura, Pirttijärvi, Markku, Saartenoja, Ari, Ugalde, Hernan, Madriz, Yuleika, Savolainen, Mikko, Gloaguen, Richard

“…Mapping geological outcrops is a crucial part of mineral exploration, mine planning and ore extraction. With the advent of unmanned aerial systems (UASs) for…”
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Full‐tensor magnetic gradiometry: Comparison with scalar total magnetic intensity, processing and visualization guidelines by Ugalde, Hernan, Morris, Bill, Kamath, Akshay, Parsons, Brian

“…Full‐tensor magnetic gradiometry data have been collected commercially for the last few years. However, to date, there is still no clarity on how to compare…”
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Improving spatial characterization of buried bedrock valleys through airborne frequency-domain electromagnetic, residual magnetic, and surface resistivity measurements by Conway-White, Oliver, Steelman, Colby M., Smiarowski, Adam, Ugalde, Hernan, Endres, Anthony L., Arnaud, Emmanuelle, Parker, Beth L.

“…The development of a three-dimensional (3D) hydrogeologic site model requires detailed knowledge of an area's hydrostratigraphy, information typically obtained…”
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A multi‐parameter approach for recognition of anthropogenic noise in aeromagnetic data collected over populated areas: Erzgebirge, Germany by Morris, William, Ugalde, Hernan, Kirsch, Moritz, Gloaguen, Richard, Ibs‐von Seht, Malte, Siemon, Bernhard, Meyer, Uwe

“…ABSTRACT Aeromagnetic data are routinely acquired by mineral exploration programmes. The objective is to obtain a raster image of the spatial variations of…”
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Locating skarns with magnetic survey data, Geyer, Erzgebirge: optimizing data acquisition procedures by Ugalde, Hernan, Morris, William, Madriz, Yuleika, Kirsch, Moritz, Gloaguen, Richard, Schneider, Michael, Schiffler, Markus, Siemon, Bernhard, Fréville, Tristan, Munschy, Marc

“…ABSTRACT Magnetic data can be acquired from a number of different platforms (e.g., ground, drone, helicopter) using a variety of sensors (e.g., caesium…”
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Effect of signal amplitude on magnetic depth estimations by Lee, Madeline, Morris, Bill, Ugalde, Hernan

“…The magnetic signal generated over any source can be analyzed in terms of the two basic components of any wave: frequency (λ) and amplitude (A). With respect…”
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An assessment of topographic effects on airborne and ground magnetic data by Ugalde, Hernan, Morris, Bill

“…Recent advances in magnetic surveying have focused on achieving higher levels of instrument sensitivity and better definition of the morphology of the magnetic…”
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An integrated geophysical and geological study of the Monturaqui impact crater, Chile by UGALDE, Hernan, VALENZUELA, Millarca, MILKEREIT, Bernd

“…— –The Monturaqui impact crater (350–370 m in diameter and 0.1 Ma old), located in a remote area in northern Chile, was surveyed in December 2003 with detailed…”
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Magnetic remanence constraints on magnetic inversion models by Morris, Bill, Ugalde, Hernan, Thomson, Vicki

“…A magnetic anomaly is produced when a rock unit has a magnetic contrast with a laterally adjacent rock unit. The cause of this magnetic contrast might be…”
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Physical property measurements: ICDP boreholes LB-07A and LB-08A, Lake Bosumtwi impact structure, Ghana by MORRIS, William A., UGALDE, Hernan, CLARK, Christina

“…— Physical rock property measurements provide the primary constraints for any geological models hypothesized from geophysical observations. Previous…”
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Integrated 3-D model from gravity and petrophysical data at the Bosumtwi impact structure, Ghana by UGALDE, Hernan, DANUOR, Sylvester K., MILKEREIT, Bernd

“…— The Bosumtwi impact structure of central Ghana was drilled in 2004 as part of the International Continental Scientific Drilling Program (ICDP). A vast amount…”
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The Lake Bosumtwi meteorite impact structure, Ghana-Where is the magnetic source? by UGALDE, Hernan, MORRIS, William A., PESONEN, Lauri J., DANUOR, Sylvester K.

“…— The Bosumtwi impact structure (Ghana) is a young and well‐preserved structure where a vast amount of information is available to constrain any geophysical…”
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The Lake Bosumtwi meteorite impact structure, Ghana-A magnetic image from a third observational level by UGALDE, Hernan, MORRIS, William A., CLARK, Christina, MILES, Brett, MILKEREIT, Bernd

“…— The Bosumtwi impact structure in Ghana is the youngest and best‐preserved medium‐sized impact structure on Earth, and because of the vast amount of prior…”
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Clast fabric examination of impact-generated breccias, borehole LB-07A, Bosumtwi, Ghana by MORRIS, William A., UGALDE, Hernan, CLARK, Christina, MILES, Brett

“…— An impact event always creates a cloud of ejecta generated through excavation of the target. Subsequent in‐filling of the void by crater‐fill deposits…”
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Borehole magnetics navigation; an example from the Stratmat Deposit, Bathurst, New Brunswick by Morris, William A, Ugalde, Hernan, Mwenifumbo, J

“…Information acquired from studies of borehole core or from borehole geophysical logs form an integral part of all mineral and oil exploration programs. Yet, as…”
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Geophysical signature of small to midsize terrestrial impact structures by Ugalde, Hernan Andres

“…Impact cratering represents a unique geological process where the initial pressure and temperature (P-T) conditions are well known, and consequently, it is…”
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Geophysical signature of small to midsize terrestrial impact structures by Ugalde, Hernan Andres

“…Impact cratering represents a unique geological process where the initial pressure and temperature (P-T) conditions are well known, and consequently, it is…”
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