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Wikipedia:Map data/Fracture zone: Difference between revisions

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| author = [[User:ChaseKiwi]]
| permission =
| additional_information = A more definitive mapping of fracture zones, including many with no official name, or not meeting the criteria for inclusion on this map, based on the 2015 project of Wessel et al.,{{sfn|Wessel|Matthews|Müller|Mazzoni|2015}} exists as of 2018.{{sfn|Wessel|Müller|Sandwell|Cande|2016}}. This page is used on multiple pages and has complex logic so any alteration should be checked as a minor typo can break display on multiple pages. Please be aware that despite their geographical size not all fracture zones will meet wikipedia's notability criteria for an individual article, but the database used in this map may provide more useful information than just the name of the fracture zone. It has transpired prior to November 2024 that fracture zone articles had names that were not consistent with [[MOS:AT]]. Most will be moving to sentence case due to inconsistent capitilisation in English sources. The logic should cope with corrections. The name displayed in this database may not align with [[MOS:CAP]] although clean up is underway as default article names are changed. Map data is approximate surface projection of fracture zones (orange) on oceans. Associated features such as probable extension of fracture zones are lighter orange and mid oceanic ridges are white. Switching logic is used to emphasise particular data such as use of colour violet or to select out a portion of the data file (this has less rendering overhead). Users with little experience might best not add local features via switching logic to this file even though this should not increase Lua processing time which is about 3.5 seconds. Approaching ten seconds usually requires for page rending consistency at time of high server load a trick to bypass Lua (<nowiki>{{#tag:mapframe}}</nowiki> instead of {{t|mapframe}}) in all pages using this data. An example of how to add local features in later rendered layers is found at [[Boomerang Seamount]].
 
Clicking on the map enables mouse over that displays more information as well as the fracture zone name.
 
==Technical detail ==
The map has been checked against sea floor contours and at least one reference for position. Experience has shown that originalOriginal acaedemic papers often are more accurate sources, but data resolution has increased with time so improvements are possible.{{sfn|Wessel|Matthews|Müller|Mazzoni|2015}} TheseWessel et. als work as published 17 July 2018 was not used as a direct source or for checking, but other sources used may well have used that digital data set and the reader is directed to this independent source for detail.{{sfn|Wessel|Müller|Sandwell|Cande|2016}} The sources used often have slightly different feature information, lengths of the zone and specify transform faults not originally mapped. The feature length data is approximate and may deviate from references, sometimes because they can not agree, sometimes because the criteria for defining a fracture zone is not agreed or inaccurately applied. Academic work on zones consulted during preparation of data is not necessarily acknowledged where there was relatively minor difference in data. The data is incomplete as official recognition of feature names is a drawn out process. Unofficial names have been added from academic literature and this remains a work in progress particularly for Indian Ocean and Eastern Pacific where a number of officially unnamed fracture zones exist and mapping is still ongoing. Unoffical names are used if more than onceone acaedemic source uses the same names. The sources for most of the data and significant revisions are:
 
== References ==
{{reflist}}
 
The sources for most of the data and revisions are:
*{{cite web|url=https://marineregions.org/gazetteer.php| title= Marine Gazetteer|access-date=31 October 2023}}
*{{cite web|url=https://www.arcgis.com/home/webmap/viewer.html|title= ArcGIS oceans basemap|access-date=31 October 2023}}
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* {{Cite journal|last1=Sykes | first1=Lynn R. |last2=Ekstörm | first2 = Göran|date=2011|title=Earthquakes along Eltanin transform system, SE Pacific Ocean: fault segments characterized by strong and poor seismic coupling and implications for long-term earthquake prediction|journal=[[Geophysical Journal International]]|volume=188|number=2|pages=421&ndash;434|doi=10.1111/j.1365-246X.2011.05284.x|bibcode = 2012GeoJI.188..421S |doi-access=free}}
* {{cite journal|last1 =Kumar|first1 =P.|last2 =Singha|first2 =P.|last3 =Ghosal|first3 =D.|last4 =Jacob|first4 =J.|last5 =Gupta|first5 =S.|year =2023|title =Lithospheric architecture beneath the Amsterdam-St. Paul plateau, Southern Indian Ocean using the integrated gravity, magnetic and seismological study|journal =Tectonophysics|volume=863|page =229989|doi =10.1016/j.tecto.2023.229989|bibcode =2023Tectp.86329989K}}
* {{cite journal|title =Hot and Cold Zones of the Southeast Indian Ridge and Their Influence on the Peculiarities of Its Structure and Magmatism (Numerical and Physical Modelling)|first1=E.P.|last1 =Dubinina|first2 =Y.I.|last2 =Galushkina|first3 =A.L.|last3 =Grokholskiia|first4 =A.V.|last4 =Kokhanb|first5 =N.M.|last5 =Sushchevskaya|issn =0016-8521|journal =Geotectonics|year =2017|volume =51|issue =3|pages =209–229|doi =10.1134/S0016852117030049}}
* {{cite web|title=National Geographic Maps|url=https://www.natgeomaps.com/|access-date=9 December 2024}}
* {{cite journal|last1 =Wessel|first1=P.|last2=Matthews|first2 =K.J.|last3=Müller|first3=R.D.|last4 =Mazzoni|first4 =A.|last5 =Whittaker|first5 =J.M.|last6 =Myhill|first6=R.|last7=Chandler|first7=M.T.|year=2015|journal=Geochemistry, Geophysics, Geosystems|title=Semiautomatic fracture zone tracking|volume=16|issue=7|pages=2462-2472|doi=10.1002/2015GC005853|bibcode=2015GGG....16.2462W}}
* {{cite web|url=http://www.soest.hawaii.edu/PT/GSFML/ |title=The Global Seafloor Fabric and Magnetic Lineation Data Base Project|first1=P.|last1=Wessel|first2=R.D.|last2=Müller|first3=D.T.|last3=Sandwell|first4=S.C.|last4=Cande|access-date=31 December 2024|date=1 August 2016|publisher=SOEST|___location=Hawaii|archive-url=http://web.archive.org/web/20241104234102/http://www.soest.hawaii.edu/PT/GSFML/|archive-date=4 November 2024}}
 
Logic has been added to display distinctive fracture zones and mid-ocean ridges. The data base has now evolved to better define some of these features from original sources and now has an existence of its own with improvements. As it was not appropriate to develop all improvements to the json database on this page itself for several technical reasons a subpage with all the json code before logic insertion had been created and any other users improving the database could use it to test json updates at ->[[Wikipedia:Map data/Fracture zone/json]]. However take care as the code for the two pages could easily get out of sync. Logic changes do have to be inserted in the live page although of course should be tested where long code snippits as these more likely to have typos.
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{ "type": "Feature", "properties": { "stroke-width":1, "stroke": "#ff8000", "stroke-opacity":0.9, "title":"[[Menard fracture zone]]<br /><small>Named after [[Henry William Menard]], Rounded trace length {{convert|2465|km|abbr=on}}<sup>[https://marineregions.org/gazetteer.php?p=details&id=7558 Marine Gazetteer],[https://www.arcgis.com/home/webmap/viewer.html ArcGIS oceans basemap]</sup></small>" }, "geometry": { "type": "LineString", "coordinates": [ [-94.5263672,-53.0147832 ],[ -96.8554688,-52.3219109 ],[ -98.7451172,-51.7814356 ],[ -101.4697266,-51.3443387 ],[ -104.1943359,-51.0690167 ],[ -106.9189453,-50.7642594 ],[ -108.9843750,-50.3734961 ],[ -110.3466797,-50.3454604 ],[ -111.1376953,-50.2050333 ],[ -113.5546875,-49.8663167 ],[ -116.8066406,-49.0666684 ],[ -119.2675781,-48.7199612 ],[ -121.0693359,-48.3708477 ],[ -122.9589844,-48.1367667 ],[ -127.5732422,-47.0701218 ] ] } },
{ "type": "Feature", "properties": { "stroke-width":1, "stroke": "#ff8000", "stroke-opacity":0.9, "title":"[[Agassiz fracture zone]]<br /><small>Rounded trace length {{convert|830|km|abbr=on}}<sup>[https://marineregions.org/gazetteer.php?p=details&id=7559 Marine Gazetteer],[https://www.arcgis.com/home/webmap/viewer.html ArcGIS oceans basemap]</sup></small>" }, "geometry": { "type": "LineString", "coordinates": [ [-120.1904297,-38.1691141 ],[ -121.3549805,-37.9615233 ],[ -122.5634766,-37.8748534 ],[ -123.8159180,-37.9268676 ],[ -124.1015625,-37.8575072 ],[ -125.0024414,-38.0480911 ],[ -126.3208008,-38.1863868 ],[ -127.9907227,-38.5137883 ],[ -129.0893555,-38.7369461 ],[ -129.4848633,-38.8397076 ] ] } },
{ "type": "Feature", "properties": { "stroke-width":1, "stroke": "#ff8000", "stroke-opacity":0.9, "title":"[[Vinogradov fracture zone]]<br /><small>Named after [[Alexander Vinogradov (geochemist)]], Rounded trace length {{convert|48|km|abbr=on}}<sup>[https://marineregions.org/gazetteer.php?p=details&id=7883 Marine Gazetteer]</sup></small>" }, "geometry": { "type": "LineString", "coordinates": [ [-28.9707452,-60.9770948],[-29.2866022,-60.8338335],[-29.5585138,-60.7544011] ] } },
{ "type": "Feature", "properties": { "stroke-width":1, "stroke": "#ff8000", "stroke-opacity":0.9, "title":"[[Akademik Kurchatov fracture zone]]<br /><small>Named after [[Igor Kurchatov]], Rounded trace length {{convert|670|km|abbr=on}}<sup>[https://marineregions.org/gazetteer.php?p=details&id=7437 Marine Gazetteer],[https://www.arcgis.com/home/webmap/viewer.html ArcGIS oceans basemap]</sup></small>" }, "geometry": { "type": "LineString", "coordinates": [ [-120.5419922,-37.5097258 ],[ -121.1132813,-37.4050738 ],[ -122.1020508,-37.1603165 ],[ -122.5854492,-37.2827946 ],[ -123.4863281,-36.9850031 ],[ -123.9697266,-36.7740925 ],[ -124.4531250,-36.7564903 ],[ -124.9365234,-36.6507925 ],[ -125.3979492,-36.6684189 ],[ -125.7934570,-36.5449494 ],[ -126.0791016,-36.6331621 ],[ -126.7382813,-36.6331621 ],[ -127.3535156,-36.8092847 ],[ -127.7709961,-36.8268747 ] ] } },
{ "type": "Feature", "properties": { "stroke-width":1, "stroke": {{#switch:{{PAGENAME}}|#default="#ff8000"|Challenger Fracture Zone|Challenger fracture zone="#ff00ff"|Chile Fracture Zone|Chile fracture zone="#ff00ff"}}, "stroke-opacity":0.9, "title":"[[Challenger fracture zone]]<br /><small>Named after [[HMS Challenger (1858)]], and adjacent, overlaps [[Chile fracture zone]], Rounded trace length {{convert|930|km|abbr=on}}<sup>[https://marineregions.org/gazetteer.php?p=details&id=7552 Marine Gazetteer],[https://www.arcgis.com/home/webmap/viewer.html ArcGIS oceans basemap]</sup></small>" }, "geometry": { "type": "LineString", "coordinates": [ [-114.1259766,-33.8886575 ],[ -116.1254883,-33.6146193 ],[ -117.4218750,-33.4314413 ],[ -118.8281250,-33.2662499 ],[ -119.8828125,-33.1191502 ],[ -121.0693359,-33.0086635 ],[ -122.8271484,-32.7318409 ],[ -124.0136719,-32.6393749 ] ] } },
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