Interferometric study of the Milky Way between Carina and Aquila     

Dottori  H.  Carranza  G. 《Astrophysics and Space Science》1971,13(1):180-184

Large field H observations of the Milky Way between Carina and Aquila were made through a narrow interference filter 15 wide. Characteristic large-scale features of the observed region are extended emission areas in Carina, Norma-Scorpius and Scutum-Sagittarius and some weak isolated nebulosities near the Coal Sac, Centauri and Normae. H photographs, a chart mapping the emission, and a list of identified emission regions are given.  相似文献   

Cretaceous–Cenozoic tectonic history of the Jiaojia Fault and gold mineralization in the Jiaodong Peninsula,China: constraints from zircon U–Pb,illite K–Ar,and apatite fission track thermochronometry     

Jun Deng  Changming Wang  Leon Bagas  Emmanuel John M. Carranza  Yongjun Lu 《Mineralium Deposita》2015,50(8):987-1006

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Uncertainty Analysis of Geochemical Anomaly by Combining Sequential Indicator Co-simulation and Local Singularity Analysis     

Liu  Yue  Carranza  Emmanuel John M. 《Natural Resources Research》2022,31(4):1889-1908

Natural Resources Research - Accurate characterization of geochemical anomaly related to metal mineralization and quantification of uncertainty propagation in space prediction are important for...  相似文献   

NRR, Moving on: Editorial     

Emmanuel John M. Carranza 《Natural Resources Research》2013,22(1):1-4

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The nitrogen abundance in NGC 55     

E. L. Agüero  G. J. Carranza 《Astrophysics and Space Science》1985,117(2):271-273

The purpose of this paper is to propose an interpretation for the line spectrum of NGC 55, whose most remarkable feature is the absence of the generally noticeable 6584[Nii]. From the physical conditions of the ionized gas responsible of the observed emission, we infer that the N(N)/N(O) abundance ratio is significantly smaller than usual, probably reflecting a nitrogen underabundance in a medium of temperatures 9100 K and densities 500 cm^–3.  相似文献   

Geochemical analysis of evaporite sedimentation in the Gachsaran Formation,Zeloi oil field,southwest Iran     

Alireza Bahadori  Emmanuel John M. Carranza  Bahman Soleimani 《Journal of Geochemical Exploration》2011,111(3):97-112

In this study, the paleo-sedimentary depositional environment of the Gachsaran Formation and the Asmari reservoir cap rock (i.e., the stratigraphically lowest member of the Gachsaran Formation) was investigated from elemental geochemical data and mineralogical data obtained XRF and SEM analyses, respectively, of anhydrite samples collected from two oil wells in the Zeloi oil field in southwestern Iran. The present data reveal that arid conditions and cycles of transgression–regression of the sea contributed to the formation of evaporite sequences of the Gachsaran Formation in a coastal sabkha-lagoon basin that was partly closed to the sea. This interpretation was based on synthesis of statistical correlation analysis the geochemical data, chemostratigraphic correlation of geochemical ratios, and textural analysis of salts observed in SEM images.  相似文献   

Integrating spatial, temporal, and magnitude probabilities for medium-scale landslide risk analysis in Darjeeling Himalayas, India     

Saibal Ghosh  Cees J. van Westen  Emmanuel John M. Carranza  Victor G. Jetten 《Landslides》2012,9(3):371-384

Landslide risk assessment is based on spatially integrating landslide hazard with exposed elements-at-risk to determine their vulnerability and to express the expected direct and indirect losses. There are three components that are relevant for expressing landslide hazard: spatial, temporal, and magnitude probabilities. At a medium-scale analysis, this is often done by first deriving a landslide susceptibility map, and to determine the three types of probabilities on the basis of landslide inventories linked to particular triggering events. The determination of spatial, temporal, and magnitude probabilities depend mainly on the availability of sufficiently complete historical records of past landslides, which in general are rare in most countries (e.g., India, etc.). In this paper, we presented an approach to use available historical information on landslide inventories for landslide hazard and risk analysis on a medium scale (1:25,000) in a perennially typical data-scarce environment in Darjeeling Himalayas (India). We demonstrate how the incompleteness in the resulting landslide database influences the various components in the calculation of specific risk of elements-at-risk (e.g., buildings, population, roads, etc.). We incorporate the uncertainties involved in the risk estimation and illustrate the range of expected losses in the form of maximum and minimum loss curves. The study demonstrates that even in data-scarce environments, quantitative landslide risk assessment is a viable option, as long as the uncertainties involved are expressed.  相似文献   

Loggerhead turtles Caretta caretta (Linnaeus) preying on the invading gastropod Rapana venosa (Valenciennes) in the Río de la Plata Estuary     

Alvar Carranza  Andrés Estrades  Fabrizio Scarabino  Angel Segura 《Marine Ecology》2011,32(2):142-147

Here we report the first observations of loggerhead turtles Caretta caretta preying on a conspicuous molluscan invader, the rapa whelk Rapana venosa. An average number of 136 opercula were found in stomach contents of five turtles, the curved carapace length ranging in from 51 to 112 cm. No other alimentary items were found in the turtles analyzed. We suggest that the rapa whelk may constitute up to 100% of the diet for immature and mature loggerheads in the Río de la Plata estuary (Uruguay), highlighting the plastic nature of the foraging behavior of loggerheads.  相似文献   

Mineral Prospectivity Mapping based on Isolation Forest and Random Forest: Implication for the Existence of Spatial Signature of Mineralization in Outliers     

Zhang  Shuai  Carranza  Emmanuel John M.  Xiao  Keyan  Wei  Hantao  Yang  Fan  Chen  Zhenghui  Li  Nan  Xiang  Jie 《Natural Resources Research》2022,31(4):1981-1999

Natural Resources Research - Known mineralized locations and randomly chosen non-mineralized locations are used traditionally as training samples in data-driven mineral prospectivity mapping (MPM)....  相似文献   

NRR Changes: Editorial     

Emmanuel John M. Carranza 《Natural Resources Research》2014,23(1):1-2

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