First vertical derivative of the magnetic field, Aeromagnetic Survey of the Scroggie Creek and Wolverine Creek Areas, NTS 115P/12 and part of 115P/11

First vertical derivative of the magnetic field, Flat River Aeromagnetic Survey, NTS 95 E (south half), Yukon

This high sensitivity aeromagnetic survey was carried out by Goldak Airborne Surveys (Goldak) on behalf of the Geological Survey of Canada (GSC) between January 25th and March 26th, 2011. Aircraft equipment operated included three cesium vapour magnetometers, a GPS real-time and post-corrected differential positioning system, a flight path recovery camera, VHS titling and recording system, as well as radar and barometric altimeters. All data were recorded digitally in GEDAS binary file format. Reference ground equipment included two GEM Systems GSM-19W Overhauser magnetometers and a Novatel 12 channel GPS base station which was set up at the base of operations for differential post-flight corrections. Eighty two flights (including test and calibration sorties) were required to complete the survey block. A total of 37,999 line kilometres of high resolution magnetic data were collected, processed and plotted. The traverse lines were flown at a spacing of 400 metres with control lines flown at a separation of 2400 metres. Nominal terrain clearance was specified at 100 metres above ground.

Forest Management in Canada Web Map: 2017 and 2020 Forest Management in Canada Web Map: 2017 and 2020 This web map is used in the Forest Management in Canada web application comparing maps from 2017 and 2020, both of which are part of the Story Map of Forest Management in Canada, 2020 (Aménagement des forêts au Canada, 2020). The Map of Forest Management in Canada provides a wall-to-wall classification of lands in Canada in 2017 and 2020. It does not differentiate areas of forest from non-forest. The Map of Forest Management in Canada differs from maps defining the area designated as “managed forest” for greenhouse gas inventory reporting purposes and does not replace those maps. Instead, the Map of Forest Management in Canada shows areas that are currently managed, and provides generalized management type classification for those areas. Collaborating agencies plan to update the dataset periodically as needed, and remain open to receiving advice from experts concerning refinement priorities for future versions. All forest management classification codes for 2020 are present in this web map and include:Water (Managed Forest Code 100) Protected (Managed Forest Code 20) Treaty/Settlement (Managed Forest Code 40) Federal Reserve (Managed Forest Code 31) Indian Reserve (Managed Forest Code 32) Restricted (Managed Forest Code 33) Private (Managed Forest Code 50) Long-Term Tenure (Managed Forest Code 11) Short-Term Tenure (Managed Forest Code 12) Other (Managed Forest Code 13) All forest management classification codes for 2017 are also present in this web map and include:Water (Managed Forest Code 100) Protected (Managed Forest Code 20) Treaty/Settlement (Managed Forest Code 40) Federal Reserve (Managed Forest Code 31) Indian Reserve (Managed Forest Code 32) Restricted (Managed Forest Code 33) Private (Managed Forest Code 50) Long-Term Tenure (Managed Forest Code 11) Short-Term Tenure (Managed Forest Code 12) Other (Managed Forest Code 13)

The GSC conducted stream sediment and water surveys in Yukon between 1976 and 2006. Original data has become outdated due to poor detection levels and limited key metals determined. In an effort to improve the geochemical dataset, the Yukon Geological Survey set about having stream sediment samples from the previous collection programs reanalyzed. Samples recovered from storage have been analyzed for 51 elements by aqua-regia digestion followed by ICPMS.

First vertical derivative of the magnetic field, Aeromagnetic Survey of the Scroggie Creek and Wolverine Creek Areas, NTS 115O/9 and part of 115O/10

GeoFIELD is a data management system that is designed to facilitate practical data entry and the production of geologic maps while in the field. GeoFIELD writes data to a Microsoft Access 2000 database and allows digitizing and plotting of station locations and structural data in an AutoCAD Map 2000 drawing using a Visual Basic for Applications interface. GeoFIELD provides a user-friendly interface within a familiar Windows environment. Its extensive picklists are easily customizable and ensure consistency and quality control during data entry. The widespread availability and easy customization features of Microsoft Access make GeoFIELD a flexible application that can be adapted to varying needs. In addition, Microsoft Access provides the ability to easily build complex database queries and generate reports. GeoFIELD can also be used successfully with a handheld device as well as with common GIS applications such as ArcGIS 8.x.

This high sensitivity aeromagnetic survey was carried out by Goldak Airborne Surveys (Goldak) on behalf of the Geological Survey of Canada (GSC) between January 25th and March 26th, 2011. Aircraft equipment operated included three cesium vapour magnetometers, a GPS real-time and post-corrected differential positioning system, a flight path recovery camera, VHS titling and recording system, as well as radar and barometric altimeters. All data were recorded digitally in GEDAS binary file format. Reference ground equipment included two GEM Systems GSM-19W Overhauser magnetometers and a Novatel 12 channel GPS base station which was set up at the base of operations for differential post-flight corrections. Eighty two flights (including test and calibration sorties) were required to complete the survey block. A total of 37,999 line kilometres of high resolution magnetic data were collected, processed and plotted. The traverse lines were flown at a spacing of 400 metres with control lines flown at a separation of 2400 metres. Nominal terrain clearance was specified at 100 metres above ground.

This map of the total magnetic field was derived from data acquired during an aeromagnetic survey carried out by EON Geosciences Inc. in the period between April 10, 2009 and September 16, 2009. The data were recorded using split-beam cesium vapour magnetometers (sensitivity =0.005 nT) mounted in each of the tail booms of a Piper Navajo and a Cessna 206 aircraft. The nominal traverse and control line spacings were, respectively, 800 m and 2 400 m, and the aircraft flew at a nominal terrain clearance of 250 m. Traverse lines were oriented N90?E with orthogonal control lines. The flight path was recovered following post-flight differential corrections to the raw Global Positioning System data and inspection of ground images recorded by a vertically-mounted video camera. The survey was flown on a pre-determined flight surface to minimize differences in magnetic values at the intersections of control and traverse lines. These differences were computer-analysed to obtain a mutually levelled set of flight-line magnetic data. The levelled values were then interpolated to a 200 m grid. The International Geomagnetic Reference Field (IGRF) was not removed from the magnetic field.

This map of the residual total magnetic field was derived from data acquired during an aeromagnetic survey carried out by Goldak Airborne Surveys during the period May 16, 2009 to July 1, 2009. The data were recorded using a split-beam cesium vapour magnetometer mounted in the tail boom of a Piper Navajo aircraft. The nominal traverse and control line spacings were 400 m and 2400 m, respectively, and the aircraft flew at a nominal terrain clearance of 150 m.