U.S. Government Workshttps://www.usa.gov/government-works
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Some of the highest grade uranium (U) deposits in the United States are hosted by solution-collapse breccia pipes in the Grand Canyon region of northern Arizona. These structures are named for their vertical, pipe-like shape and the broken rock (breccia) that fills them. Hundreds, perhaps thousands, of these structures exist. Not all of the breccia pipes are mineralized; only a small percentage of the identified breccia pipes are known to contain an economic uranium deposit. An unresolved question is how many undiscovered U-bearing breccia pipes of this type exist in northern Arizona, in the region sometimes referred to as the “Arizona Strip”. Two principal questions remain regarding the breccia pipe U deposits of northern Arizona are: (1) What processes combined to form these unusual structures and their U deposits? and (2) How many undiscovered U deposits hosted by breccia pipes exist in the region? A piece of information required to answer these questions is to define the area ...
Open Government Licence - Canada 2.0https://open.canada.ca/en/open-government-licence-canada
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The High Resolution Digital Elevation Model (HRDEM) product is derived from airborne LiDAR data (mainly in the south) and satellite images in the north. The complete coverage of the Canadian territory is gradually being established. It includes a Digital Terrain Model (DTM), a Digital Surface Model (DSM) and other derived data. For DTM datasets, derived data available are slope, aspect, shaded relief, color relief and color shaded relief maps and for DSM datasets, derived data available are shaded relief, color relief and color shaded relief maps. The productive forest line is used to separate the northern and the southern parts of the country. This line is approximate and may change based on requirements. In the southern part of the country (south of the productive forest line), DTM and DSM datasets are generated from airborne LiDAR data. They are offered at a 1 m or 2 m resolution and projected to the UTM NAD83 (CSRS) coordinate system and the corresponding zones. The datasets at a 1 m resolution cover an area of 10 km x 10 km while datasets at a 2 m resolution cover an area of 20 km by 20 km. In the northern part of the country (north of the productive forest line), due to the low density of vegetation and infrastructure, only DSM datasets are generally generated. Most of these datasets have optical digital images as their source data. They are generated at a 2 m resolution using the Polar Stereographic North coordinate system referenced to WGS84 horizontal datum or UTM NAD83 (CSRS) coordinate system. Each dataset covers an area of 50 km by 50 km. For some locations in the north, DSM and DTM datasets can also be generated from airborne LiDAR data. In this case, these products will be generated with the same specifications as those generated from airborne LiDAR in the southern part of the country. The HRDEM product is referenced to the Canadian Geodetic Vertical Datum of 2013 (CGVD2013), which is now the reference standard for heights across Canada. Source data for HRDEM datasets is acquired through multiple projects with different partners. Since data is being acquired by project, there is no integration or edgematching done between projects. The tiles are aligned within each project. The product High Resolution Digital Elevation Model (HRDEM) is part of the CanElevation Series created in support to the National Elevation Data Strategy implemented by NRCan. Collaboration is a key factor to the success of the National Elevation Data Strategy. Refer to the “Supporting Document” section to access the list of the different partners including links to their respective data.
Deze reeks gegevens bestaat uit de laag van de gemeenschappelijke perimeter, de wettelijke zonering, de gevarenlagen (blokval en aardverschuiving) van het op 20 december 2002 goedgekeurde Plan de Prévention des Risques de Mouvements de Terrain du Mont Canisy, aangevuld met het "Plan de Prévention des Risques de Mouvements de Terrain du Slope Nord du Mont Canisy", dat alleen betrekking heeft op de gemeente Bénerville sur Mer en dat op 23 november 2007 is goedgekeurd.
Open Government Licence - Canada 2.0https://open.canada.ca/en/open-government-licence-canada
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With the changing climate conditions, marine traffic along Canada’s coastal regions has increased over the past couple of decades and the need to improve our state of preparedness for oil-spill-related emergencies is critical. Baseline coastal information, such as shoreline form, substrate, and vegetation type, is required for prioritizing operations, coordinating onsite spill response activities (i.e. Shoreline Cleanup Assessment Technique [SCAT]), and providing information for wildlife and ecosystem management. Between 2010 and 2019, georeferenced high-definition videography and photos were collected for various study sites across coastal Canada. The study areas include Beaufort Sea, Mackenzie Delta channels and Banks Island in the western Canadian Arctic; James Bay, Hudson Bay, Nunavik, Resolute Bay, Victoria Strait, Baffin Island and Coronation Gulf in the eastern Canadian Arctic; Labrador, Bay of Fundy and Chedabucto Bay in Atlantic Canada and Kitimat, Haida Gwaii, North Vancouver Island, Mainland BC and Burrard Inlet in the northern Pacific. Data was collected during ice-free and low tide conditions (where applicable) between July and September. Low-altitude helicopter surveys were conducted at each study site to capture video of the shoreline characteristics. In addition to acquiring videography, ground-based observations were recorded in several locations for validation. Shoreline segmentation was then carried out by manual interpretation of the oblique videography and the photos aided by ancillary data. This involved splitting and classifying the shoreline vectors based on homogeneity of the upper intertidal zone. Detailed geomorphological information (i.e. shoreline type, substrate, slope, height, accessibility etc.) describing the upper intertidal, lower intertidal, supratidal and backshore zones was extracted from the video and entered into a geospatial database using a customized data collection form. In addition, biological characteristics like biobands, water features, fauna, human use etc. observed along the coast were recorded. The data was also validated through ground samples (when available) and a second interpreter QA (quality analysis) was performed on each dataset (excluding Nunavik) to ensure high quality and consistency. The final dataset contains segments ranging in length from 150 m to 2500 m (except Nunavik). The minimum segment length is 45 m for study areas in the west coast that were surveyed in 2018-2019. In total, about 33,700 km of shoreline were segmented within all the survey zones.
Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
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Society of Environmental Toxicology and Chemistry North America Conference 2014 (Vancouver, Canada) Poster presentation. Poster Abstract: GIS Layer of Standardized Fish Mercury Concentrations Across Canada Now Available A national GIS layer of standardized fish mercury (Hg) data would be useful to the scientific community for many types of spatial analyses and modeling. To produce this national GIS layer for Canada, we first assembled all available fish Hg data across the country and did quality-assurance checks, which resulted in 387,872 fish Hg records. We removed all records from sites with known point-source Hg inputs or from hydroelectric reservoirs. The resulting dataset contained 231,063 records from 3547 locations across Canada from 1967-2010. We used this data and the USGS National Descriptive Model for Mercury in Fish (NDMMF) to estimate Hg concentrations in a standard-length (12-cm) whole yellow perch for each sampling location. The resulting geocoded dataset of standardized fish Hg concentrations is called the Fish Mercury Datalayer for Canada, or FIMDAC, and is now available to the scientific community. FIMDAC can be used for Hg eco-risk assessment, modeling of Hg dynamics and bioaccumulation in aquatic ecosystems, spatial analysis of Hg biogeochemistry, and as baseline for modeling future Hg management scenarios and their environmental consequences. FIMDAC is not appropriate for human health risk assessment, temporal trend analysis or for setting human consumption guidelines. Relevant links: Data request form: http://www.smu.ca/research/fish-mercury-datalayer.html Metadata: http://dx.doi.org/10.6084/m9.figshare.1210773
In the 1910s, Mexican migration into Phoenix increased due to a number of factors such as a need for laborers, and the Mexican Revolution. Most of these immigrants were working class during the 1920s.
There was quite a bit of divide between the white population and other races, and because of this Mexicans generally could not purchase property north of Van Buren, even if they could afford it. Mexican children even knew it was best not to cross Van Buren unless they had work to do on the other side. There were even several rules and restrictions on where Mexicans could buy property.
Despite this, Mexican immigrants made distinct neighborhoods, and took pride in them. They were loyal to their barrios. But as Phoenix has grown and urbanized, many of these neighborhoods have been demolished to make way for new growth, and their history might soon be forgotten. But if immediate action is taken, it may be possible to save this Disappearing Heritage before it is too late.The included bibliography has all the data, articles, and images used. Here's the link just in case, but it is in the Story Map and under the Terms of Use section: https://docs.google.com/document/d/1Lz4QB4kK0wQD7hwCA8OMxaHS4ix6TgDgCLXOH9STYbo/edit?usp=sharing
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U.S. Government Workshttps://www.usa.gov/government-works
License information was derived automatically
Some of the highest grade uranium (U) deposits in the United States are hosted by solution-collapse breccia pipes in the Grand Canyon region of northern Arizona. These structures are named for their vertical, pipe-like shape and the broken rock (breccia) that fills them. Hundreds, perhaps thousands, of these structures exist. Not all of the breccia pipes are mineralized; only a small percentage of the identified breccia pipes are known to contain an economic uranium deposit. An unresolved question is how many undiscovered U-bearing breccia pipes of this type exist in northern Arizona, in the region sometimes referred to as the “Arizona Strip”. Two principal questions remain regarding the breccia pipe U deposits of northern Arizona are: (1) What processes combined to form these unusual structures and their U deposits? and (2) How many undiscovered U deposits hosted by breccia pipes exist in the region? A piece of information required to answer these questions is to define the area ...