![]() Human activities in the ocean have been radically altered by the COVID-19 pandemic, with reports of port restrictions and changes in consumption patterns impacting multiple maritime sectors, most notably fisheries, passenger ferries and cruise ships 10– 13 sectors which rely heavily on the movement of people and goods. To better understand the potential effects on the blue economy and the environment, there is an urgent need to quantify the magnitude and patterns of the changes in human activities at sea. This unprecedented event, which has been referred to as the “anthropause”, a period of reduced human mobility 1, has led to sudden and often dramatic reductions in transport, energy consumption and consumer demand resulting in significant changes in the scale and extent of human stressors and their associated impacts on the natural environment 2– 9. Click any of these areas to get a geodatabase of tracks within you’ll get all vessel types, for all months since 2017.The coronavirus disease (COVID-19) pandemic has emerged as both a global health and socioeconomic crisis, with many countries implementing unparalleled mobility restrictions to control the spread of the virus. Choose the scale that best fits your needs these reference areas will appear on the map (some of the areas can be pretty large, so if you don’t see anything try zooming out). The Download Options panel in the lower-right corner of the screen provides some predefined areas of interest, based on NOAA’s nautical charts. But if you are interested in downloading this data for your own analysis here’s how… Analysts And that’s cool because there are so many patterns to explore and question. In many cases, that will be the long and the short of it. We’ll provide some interesting examples and explanations in a follow-up post, but for now we hope you enjoy tripping through the intricate web of marine traffic and find interesting patterns of your own. Check it out: stacks and stacks of paths provides windows into understanding the drivers of vessel traffic, which, like any other social science data, reveal echoes of other harder-to-measure phenomena. Passenger vessels visiting Columbia Glacier, out of the port of Valdez, Alaska. They are available at a number of scales, from level 1 (vast) to level 3 (regional) as well as inland waterways. Nautical boundaries are available as a reference to provide context at close scales.Ī category of areas of interest (NOAA Electronic Navigation Chart areas) provide geographic subsets within which vessel tracks can be downloaded. A categorical filter segments vessels into seven popular types and one catch-all other category. The time filter allows for the selection of a specific month, currently dating back to the beginning of 2017 and extending into the most recently-available month of processed vessel traffic. The data is sourced from the Automatic Identification System (AIS) provided by the USCG, NOAA, and BOEM through Marine Cadastre. Vessel Traffic is a web map, built with the ArcGIS API for Javascript, to provide a simple tool to visualize and access the massive, and ever-growing, footprint of nautical transportation and commerce. Vessel Traffic app to this configuration: What Vessel Traffic application showing Tow (tug) vessels around Chesapeake Bay.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |