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ISOLINES AND FIELD MAPS Isoline –line of equal value Field – area with measurable values.

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Presentation on theme: "ISOLINES AND FIELD MAPS Isoline –line of equal value Field – area with measurable values."— Presentation transcript:

1 ISOLINES AND FIELD MAPS Isoline –line of equal value Field – area with measurable values

2 http://weather.unisys.com/surface/index.html Temperature Isotherm –line of equal temperature

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4 Air Pressure Isobar- Line of equal air (barometric) pressure

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6 Topographic Maps (Contour maps) Contour lines- lines of equal elevation

7 Extra tropical low (remnants of Noel 11-3-07)

8 http://www.wrcc.dri.edu/pcpn/us_precip.gif

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10 cas.buffalo.edu/commentary/buffalo-weather.html

11 FIGURE 4. Earthquake risk maps of the United States: (a) Relative risk of damage, based to a large extent on known earthquake history (Algermissen, 1969). (b) Probabilistic risk map showing maximum horizontal ground acceleration with a 90-percent probability of not being exceeded in 50 years (Algermissen et al., 1982). www.mgs.md.gov/esic/brochures/earthquake.html

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13 ISOLINE RULES 1. Connect point of equal value 2. Gentle and smooth lines 3. Parallel and form circle ( NEVER cross, exception –cliff))

14 Gradient Show how fast or slow change occurs Lines close (steep). Lines far apart (gentle) Equation: ESRT

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18 East Styrockaway Mountains

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20 Intro to Topographic Maps Contour lines - lines of equal elevation Contour interval- difference between two lines Slope/Gradient – Show how fast or slow change occurs (ESRT) Profile – Side view

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29 Making a Profile Put piece of paper along the line (make sure you can see the contour values. If not please label) Put a mark wherever your paper crosses a contour line. Each mark(on your paper) should have a contour value. Take your paper and place at the bottom of graph. Create a vertical axis with numbers on the graph. Graph your marks with the elevations. Connect points with a smooth line.

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31 javascript:;

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33 http://hvo.wr.usgs.gov/maunaloa/

34 http://volcano.und.edu/vwdocs/vwlessons/activities/l_number3.html

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38 Mapping http://www.lib.noaa.gov/#Imaging noaa library – maps and images http://docs.lib.noaa.gov/rescue/dwm/data_rescue_daily_weather_maps.html old weather maps http://www.csus.edu/indiv/s/slaymaker/Archives/Geol10L/landforms.htm great TOPO EXAMPLES http://geology.asu.edu/~sreynolds/topo_gallery/topo_gallery.htm http://reynolds.asu.edu/topo_gallery/topo_gallery.htm vitual topo stuff http://geology.asu.edu/~reynolds/topo_gallery/intro_title.htmhttp://geology.asu.edu/~reynolds/topo_gallery/intro_title.htm http://www.nysgis.state.ny.us/gisdata/quads/drg24/index.htmhttp://www.nysgis.state.ny.us/gisdata/quads/drg24/index.htm has high res scanned in topo maps for the entire state of NY (as far as I can tell). File size is large, but you can save it to your computer, zoom in, crop, print, and so on. The quality is quite impressive. you can also use: www.topozone.com which has printable topo maps. you can choose the scale and size. i would recommend 1:24000 and "large" setting. quality is not as good, but the files load much quicker.www.topozone.com finally, this is a great site that shows landform examples on topo maps. http://www.csus.edu/indiv/s/slaymaker/Archives/Geol10L/landforms.htmhttp://www.csus.edu/indiv/s/slaymaker/Archives/Geol10L/landforms.htm

39 http://seamless.usgs.gov/ http://www.nationalatlas.gov/printable.html#referencehttp://www.nationalatlas.gov/printable.html#reference maps http://www.lib.utexas.edu/maps/ maps http://www.geographynetwork.com/ http://data.geocomm.com/ http://www.maptech.com/onlinemaps/index.cfm?CFID=807630&CFTOKEN=38445056 printable maps of every state such as this one at... http://www.nationalatlas.gov/printable.html#reference google earth map of NY state http://www.nationalatlas.gov/printable.html#reference http://www1.nysgis.state.ny.us/MainMap.cfm http://www1.nysgis.state.ny.us/MainMap.cfm latitude and longitude Degree Confluence Project: http://www.confluence.org/ You can find resources for your own state at... http://www.usgs.gov/http://www.confluence.org/ http://www.usgs.gov/ http://www.ngdc.noaa.gov/seg/geomag/declination.shtml mag declination pictures This is a great site with topo maps for multiple geomorphic features: http://www.csus.edu/indiv/s/slaymaker/Archives/Geol10L/landforms.htmhttp://www.csus.edu/indiv/s/slaymaker/Archives/Geol10L/landforms.htm Here's a simple one that shows photo of feature side by side with topo map: http://www.uwsp.edu/geo/faculty/lemke/alpine_glacial_glossary/glossary.html http://www.nysgis.state.ny.us/gisdata/quads/drg24/index.htmhttp://www.nysgis.state.ny.us/gisdata/quads/drg24/index.htmtopo maps of ny climate variables http://www.geo.appstate.edu/ncga/newsletters/Climate%20Controls.htmhttp://www.geo.appstate.edu/ncga/newsletters/Climate%20Controls.htm


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