{"id":168608,"date":"2016-06-14T09:00:45","date_gmt":"2016-06-14T13:00:45","guid":{"rendered":"https:\/\/noaacoastsurvey.wordpress.com\/?p=168608"},"modified":"2016-06-14T09:00:45","modified_gmt":"2016-06-14T13:00:45","slug":"beta-test-csb","status":"publish","type":"post","link":"https:\/\/nauticalcharts.noaa.gov\/updates\/beta-test-csb\/","title":{"rendered":"Beta test of crowdsourced bathymetry holds promise for improving U.S. nautical charts"},"content":{"rendered":"

We are on the verge of acquiring a significant new source of data to improve NOAA\u00a0nautical charts, thanks to an enthusiastic industry and mariners equipped with new technology.<\/em><\/h3>\n

By\u00a0Lt. Adam Reed,\u00a0Integrated Oceans and Coastal Mapping (IOCM) Assistant Coordinator<\/em>
\nThe United States has about 3,400,000 square nautical miles of water within our coastal and Great Lakes jurisdiction. Coast Survey, who is responsible for charting that vast area, averages about 3,000 square nautical miles of hydrographic surveying each year. The data collected by those surveys update over a thousand NOAA charts. However, hydrographic surveys are expensive and laborious, and so Coast Survey directs them toward the highest priority sites, which leaves many coastal areas without updates for many years.
\nCoast Survey may soon get new sources of information, provided voluntarily by mariners, which will alert cartographers to areas where shoaling and other changes to the seafloor have made the chart inaccurate.
\n<\/p>\n

Rose Point Navigation System beta tests new crowdsourcing database<\/h3>\n

Technology has reached the point where any boater can buy an echo sounder kit, add a GPS system, record depth measurements, and make their own geospatial observations in a common reference frame. The question then for hydrographic offices (who are concerned with improving nautical charts for safe navigation) becomes \u201chow do we take advantage of that?\u201d
\nRose Point Navigation Systems<\/a> is working with system developers at NOAA\u2019s National Centers for Environmental Information<\/a> (NCEI) and with hydrographic experts at Coast Survey<\/a> and others who are collaborating on an international effort to maintain crowdsourced bathymetry. In a beta test released on May 13, 2016<\/a>, Rose Point has added a new feature to Coastal Explorer that gives users an option to send anonymous GPS position and soundings data to a new international database managed by NCEI. After getting permission from users, Rose Point systems will generate data log files of positions, depths, and time, and automatically transmit the files to the data center, where Coast Survey can pull the data to compare it to nautical charts.<\/p>\n

Crowdsourced bathymetry is an international project<\/h3>\n

Using data from private sources is not new for Coast Survey. Private interactive cruising guides and other internet-based enterprises have set up services that allow commercial mariners and recreational boaters to share information about navigation hazards they see (or experience) while on the water.\u00a0The United States Power Squadrons<\/a> and the U.S. Coast Guard Auxiliary<\/a> have a decades-long tradition of sharing updates through our cooperative charting programs. But\u00a0the lack of appropriate software and integration between sources has hampered efforts to use\u00a0the information\u00a0to its full potential.
\nHydrographic offices around the world are re-thinking crowdsourced bathymetry. In October 2014, Coast Survey led the U.S. delegation to the Fifth Extraordinary International Hydrographic Conference<\/a>, with Rear Admiral Gerd Glang at the helm. At this meeting, the U.S. and France jointly proposed an initiative (see Proposal No. 4<\/a>) that introduced crowdsourced bathymetry as a recognized source of data for nautical charts. One of the results of that initiative was the formation of the IHO Crowdsourced Bathymetry Working Group<\/a> (IHO CSBWG) that set out to develop crowdsourcing principles and guidelines, and then offer a platform for sharing best practices around the world.
\nWorking hand-in-hand with NCEI, the working group has developed a database that can receive volunteered bathymetric data. Data can come from anyone in the world, and everyone can access it.<\/p>\n

Coast Survey will use crowdsourced bathymetry to assess chart accuracy<\/h3>\n

Crowdsourced reports serve an important role in focusing attention on trouble areas. The data helps cartographers determine whether a charted area needs to be re-surveyed, or if they can make changes based on the information at hand. Even with very sparse data, cartographers can make improvements to nautical charts.
\nAgreeing in principle to use crowdsourced data is much different than applying the system to the vigor of data transmission from moving vessels, however, so Coast Survey experts contributed hydrographic expertise and system testing. Using Rose Point\u2019s Coastal Explorer<\/a>, Coast Survey Research Vessel Bay Hydro II<\/a><\/em> transmitted \u201ccrowdsourced\u201d data using log files that were automatically produced by the electronic charting system\u00a0software. (Bay Hydro II<\/em> is Coast Survey\u2019s primary platform to test and evaluate new hydrographic survey technologies.)
\n

\"BHII<\/a>
Coast Survey Research Vessel Bay Hydro II<\/em> collected about 123,000 soundings, over 12 days, to pre-test the efficacy of Rose Point beta test for bathymetric crowdsourcing.<\/figcaption><\/figure>
\n\u201cWhen you aggregate crowdsourced data, we can expect to see trends develop where the seafloor has likely changed from charted data,\u201d explains Lt. Anthony Klemm. \u201cUsing Bay Hydro II<\/em> data transmissions, we saw such trends indicating shoaling near the Patuxent river entrance. Similarly, in the approach to Solomons harbor, trends displayed depths deeper than charted.\u201d
\nIt is important to emphasize that Coast Survey does not necessarily make changes to any significant charted feature based on crowdsourced data alone. That data, however, is about to become a major factor in making charts better.<\/p>\n","protected":false},"excerpt":{"rendered":"

We are on the verge of acquiring a significant new source of data to improve NOAA\u00a0nautical charts, thanks to an enthusiastic industry and mariners equipped with new technology. By\u00a0Lt. Adam Reed,\u00a0Integrated Oceans and Coastal Mapping (IOCM) Assistant Coordinator The United States has about 3,400,000 square nautical miles of water within our coastal and Great Lakes … <\/p>\n

Continue reading “Beta test of crowdsourced bathymetry holds promise for improving U.S. nautical charts”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":168609,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[3,25,21,10],"tags":[100,101,102],"class_list":["post-168608","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bathymetry","category-cartography","category-crowdsourced-bathymetry","category-nautical-charts","tag-iho","tag-national-centers-for-environmental-information","tag-rose-point-navigation-systems"],"_links":{"self":[{"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/posts\/168608","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/comments?post=168608"}],"version-history":[{"count":0,"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/posts\/168608\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/media\/168609"}],"wp:attachment":[{"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/media?parent=168608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/categories?post=168608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nauticalcharts.noaa.gov\/updates\/wp-json\/wp\/v2\/tags?post=168608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}