GeoTalks 2022 Sessions

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9:08 – 9:15 – Opening RemarksPatrick Cunningham, Blue Marble Geographics President & CEO

9:20 to 9:50 –  Advanced Workflows with Global Mapper Pro – Katrina Schweikert, Blue Marble Geographics Product Manager

Global Mapper Pro provides a variety of advanced tools for performing complex spatial analysis. We will look at several advanced workflows made possible by the newest tools in Global Mapper Pro. A variety of tools support creating vector and raster products from raw lidar and imagery.  In earthworks and construction site planning, terrain painting and break line extraction provide a quick and fun sandbox for site planning. With the inclusion of python in Global Mapper Pro, professional users can develop their own tools or pass data between Global Mapper and other popular applications with python support. 

9:55 am to 10:25 – Using Bathymetry to Understand the Melting of the Greenland Ice Sheet – Dr. Larry Mayer, PhD, Professor and the Director of the Center for Coastal and Ocean Mapping at the University of New Hampshire

Over the past 40 years, the melting rate of the Greenland Ice Sheet has increased six-fold, with a measurable impact on global sea-level rise. There is much uncertainty about the processes responsible for this melting, with the largest unknown being how much of the melting comes from calving icebergs and the melting of glaciers in direct contact with the ocean. These questions are not insignificant. Should the entire Greenland Ice Sheet melt, the global sea level would rise more than 7 meters, impacting hundreds of millions of people. To better understand the processes responsible for the melting of the Greenland Ice Sheet, we mounted two expeditions to virtually unmapped regions of northwestern Greenland where Petermann Glacier enters Petermann Fjord and where Ryder Glacier enters Sherard Osborne Fjord. Despite the logistical challenges of mapping in these ice-covered and previously unmapped regions, we were able to create near-complete maps of the seafloor of these two fjords and, from the nature of the seafloor, understand the critical role that bathymetry can play in the melting of the Greenland Ice Sheet.

10:30 – 10:45 – Creating a Map Book – Amanda Lind, Blue Marble Geographics Application Specialist

Global Mapper offers numerous options for sharing map data. Arguably the most effective sharing method is simply printing the map. In this brief presentation, Amanda Lind from Blue Marble’s tech support team will explore the procedure for rendering a map in printed form, including the option to create a multi-page map book covering the extent of the required data layers. During this workflow, she will also show how a variety of map elements can be added to each page including a scale bar, page number, and legend.

10:50 – 11:20 – Terrain Analysis of High-Risk Mining Using Global Mapper – Brett Rhodes, BHP Mine Surveyor

Brett Rhodes, a mine surveyor, based in Australia and the 2021 Global Mapper Master winner, will share how he successfully incorporated Global Mapper and Global Mapper Mobile into a streamlined field data deployment process at the Alcoa Huntly Mine in Western Australia. His innovative workflow provided blasting supervisors, field coordinators, and environmental scientists with immediate and continually updated access to the entire operational plan for the mine on their mobile devices.

11:25- 11:55 – Using a Bluetooth RTK unit with Global Mapper Mobile Pro – Jeffrey Hatzel, Blue Marble Geographics Product Manager

Global Mapper Mobile allows our users to extend their workflows from the desktop to wherever they may be in the field. While the application will utilize a mobile device’s location services, higher accuracy may be needed for certain workflows. The Advanced GPS tool allows Global Mapper Mobile Pro users to connect to external Bluetooth GNSS devices. Using the tool’s built-in NTRIP client and connecting to an RTK capable external device is available for even higher precision workflows. This talk will highlight a workflow using an external RTK device as the location source in Global Mapper Mobile Pro, including setting up and connecting to the device, establishing a connection with a local correction source, and then recording information while in the field.

12:00 – 12:20 – Scholarship Award and Academic Programs – David McKittrick, Blue Marble Geographics Outreach & Training Manager

13:00 – 13:15 – Creating Thematic Maps in Global Mapper – Nate Treacy, Blue Marble Geographics Application Specialist

The visual representation of data distribution is fundamental to the discipline of GIS. Thematic maps convey geographic patterns and as such, are an effective analysis tool. In this short demonstration, Nate Treacy from Blue Marble’s technical support team will walk through the process of applying colors derived from variations in the attributes associated with a layer. He will then show how a legend can be added to the map display to convey the necessary information about the data.

13:20 – 13:50  – What’s New in Geographic Calculator & GeoCalc Online –Sam Knight, Blue Marble Geographics Director of Product Management

Geographic Calculator and its companion GeoCalc Online continue to support the latest in geodetics transformation standards.  Keeping pace with the EPSG Dataset, new updates this year in both tools reflect how modern projects are becoming more aware of both time and the third dimension. This session will get you up to speed with the latest developments in the Geographic Calculator, GeoCalc Online, and the latest tools for keeping them updated.

13:55 – 14:25  – The Use of Global Mapper in the Study of Remarkable Submarine Columns with the Potential for Rapid Carbon Sequestration – Paul Seaman, PhD, Freelance Marine geologist/geophysicist 

The Ikka Project comprises a multidisciplinary group of scientists from Scandinavia and the UK. Collectively we study the spectacular columnar deposits of the mineral ikaite growing from the floor of a shallow Greenlandic fjord and the mineral’s potential as a carbon sequestration medium. Fieldwork has included geophysical, geological, hydrographical, topographic, and photographic mapping and geochemical and biological investigations. Global Mapper has been used for planning, data processing, acquisition, and analysis and for the production of graphics and maps for publications.

Numerous models have been produced from published sources integrated with fieldwork data, and Global Mapper generated content. The processing flows used to create the contents of the Ikka Project Global Mapper models include: the georeferencing of published sources; the display and analysis of spreadsheet data; the gridding, contouring, and display of multibeam bathymetric soundings; the import, cleaning, and display of drone and multibeam sonar derived elevation point cloud data; the mapping and dimensioning of the Ikka Columns; and the analysis, sorting and abstraction of vector data.

Last August, Global Mapper Mobile Pro was used on a ruggedized tablet in the field to guide geologists and divers to locations of interest and for seawater and shallow seismic profiling survey management. Global Mapper was also used to create fly-throughs of the data sets for a TV company making a documentary about the project. The integration of all these data sets continues to reveal interesting connections between our datasets leading to new research leads and our research continues.’

14:30 – 15:00 – Exploring the Pixels to Points Tool for Drone Data Analysis In Global Mapper – Mackenzie Mills, Blue Marble Geographics Content Writer

As the availability of drone and unmanned aerial vehicles (UAVs) continues to explode, this technology is becoming an increasingly common method for accessible and affordable GIS data collection. The Pixels to Points tool in Global Mapper Pro transforms a set of individual drone-collected images into a cohesive 3D point cloud, orthoimage, and 3D mesh outputs. This session will review the Pixels to Points tool in Global Mapper Pro and the principles behind photogrammetric point cloud creation, demonstrating the tool and exploring the generated high-resolution data layers. 

15:00 – 15:10 – Closing remarks – Rachael Landry, Blue Marble Geographics Marketing Assistant

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