DRG Maps

DRGs are created by scanning paper maps at 250 pixels per inch resolution. Since at 1:24,000 1 inch on the map represents 2,000 feet on the ground, each DRG pixel corresponds to an area about 8 feet (2.4 meters) on a side. Each pixel is associated with a single attribute: a number from 0 to 12. The numbers stand for the 13 standard DRG colors


(http://www.forestpal.com/DRGs.html)

Isopleth Map

Isopleth maps can be used in a variety of fields and for limitless purposes. Essentially, Isopleth maps show information in an arc, projecting density as visual information.



(http://nadp.sws.uiuc.edu/maps/Default.aspx)

Isopach Map

Isopach maps (top left projection)are used to measure rock or sediment thickness. This map is measuring limestone/shale thickness in upper New York state


(http://images.google.com/imgres?imgurl=http://www.searchanddiscovery.com/documents/2007/07022lash/images/ani04.gif&imgrefurl=http://www.searchanddiscovery.net/documents/2007/07022lash/index.htm&usg=__pYyJ2M4QmXUChs3Hy8miD1lAO34=&h=425&w=600&sz=209&hl=en&start=15&um=1&itbs=1&tbnid=CHpTWxVBDvBBkM:&tbnh=96&tbnw=135&prev=/images%3Fq%3Disopach%2Bmap%26um%3D1%26hl%3Den%26client%3Dfirefox-a%26sa%3DN%26rls%3Dorg.mozilla:en-US:official%26tbs%3Disch:1)

Isohyet Map

Isohyets are corresponding lines of rainfall in millimeters. Heavy weather systems have been inundating much f the world this season. As the Earth changes, and Humans change the Earth, weather models become ever increasingly important.


(http://images.google.com/imgres?imgurl=http://www.waterplan.water.ca.gov/docs/portfolio/faf_data/precip/precip_1998_w-percent.jpg&imgrefurl=http://www.waterplan.water.ca.gov/waterpie/precip/precip.cfm&usg=__UraUicEOkDoMHoymBnWkXenT3Nk=&h=1024&w=784&sz=157&hl=en&start=5&um=1&itbs=1&tbnid=BiE5cH0wgJXD9M:&tbnh=150&tbnw=115&prev=/images%3Fq%3Disohyetal%2Bmap%26um%3D1%26hl%3Den%26client%3Dfirefox-a%26sa%3DN%26rls%3Dorg.mozilla:en-US:official%26tbs%3Disch:1)

Isotach

Isotach maps are a measurement of wind speed, usually measured every hour or more. These lines are called wind bars which indicate wind speed ans wind direction. Note their likeness to a weather vane. The back of the vain is where you will see the smaller bars indicating wind speed. The short bar indicates 5mph/knots, the longer ten mph/knots and a flag indicates 50 plus mph/knots. These barbs help in understanding weather pattern and predicting weather. The wind speed and direction as well as barometric pressure all work together in predicting weather.


(http://images.google.com/imgres?imgurl=http://www.rap.ucar.edu/weather/surface/us_mslp.gif&imgrefurl=http://www.nrlmry.navy.mil/~chu/tclinks.htm&usg=__1CffXtNZcgwkdRB_fxXHahiiHk0=&h=680&w=680&sz=66&hl=en&start=41&um=1&itbs=1&tbnid=WR-vjBDbqqhN4M:&tbnh=139&tbnw=139&prev=/images%3Fq%3DIsotach%2BWind%2BMap%26start%3D36%26um%3D1%26hl%3Den%26client%3Dfirefox-a%26sa%3DN%26rls%3Dorg.mozilla:en-US:official%26ndsp%3D18%26tbs%3Disch:1)

Isobars

Isobars are a means to visualize atmospheric pressure. It is a key component in predicting weather. Note the differences in numbers between the high and low pressure fronts. The pressure gradient force is the difference in these numbers between their proximity. The greater the number, the greater the PGF.


(http://images.google.com/imgres?imgurl=http://www.solcomhouse.com/images/isobar.gif&imgrefurl=http://www.solcomhouse.com/windpower.htm&usg=__GMFCNznUDX7ICEmR-scnyUi_8ps=&h=768&w=1024&sz=228&hl=en&start=5&um=1&itbs=1&tbnid=aJWm3wdwSLmAgM:&tbnh=113&tbnw=150&prev=/images%3Fq%3Disobars%2Bnoaa%26um%3D1%26hl%3Den%26client%3Dfirefox-a%26sa%3DN%26rls%3Dorg.mozilla:en-US:official%26tbs%3Disch:1

LIDAR of the World Trade Center

LIDAR reading of the World Trade Center site. "The use of lasers has become commonplace, from laser printers to laser surgery. In airborne-laser-mapping lidar, lasers are taken into the sky. Instruments are mounted on a single- or twin-engine plane or a helicopter. Airborne lidar technology uses four major pieces of equipment (see figure below). These are a laser emitter-receiver scanning unit attached to the aircraft; global positioning system (GPS) units on the aircraft and on the ground; an inertial measurement unit (IMU) attached to the scanner, which measures roll, pitch, and yaw of the aircraft; and a computer to control the system and store data. Several types of airborne lidar systems have been developed; commercial systems commonly used in forestry are discrete-return, small-footprint systems. “Small footprint” means that the laser beam diameter at ground level is typically in the range of 6 inches to 3 feet. The laser scanner on the aircraft sends up to 100,000 pulses of light per second to the ground and measures how long it takes each pulse to reflect back to the unit."


(http://www.noaanews.noaa.gov/stories/s798.htm)

Doppler Radar

This Doppler radar image is hurricane Charley that hit in August of 2004.


(http://images.google.com/imgres?imgurl=http://www.deadlystorms.com/storms/2004/2004%2520charley/images/Hurricane_Charley_Loop_Full.gif&imgrefurl=http://www.deadlystorms.com/storms/2004/2004%2520charley/videos.htm&usg=__6Yu0n6q68UaVyFMPQPhpUl3UMTU=&h=500&w=468&sz=276&hl=en&start=1&um=1&itbs=1&tbnid=gsPwpmISMwUicM:&tbnh=130&tbnw=122&prev=/images%3Fq%3Ddoppler%2Bhurricane%2Bcharley%26um%3D1%26hl%3Den%26client%3Dfirefox-a%26sa%3DN%26rls%3Dorg.mozilla:en-US:official%26tbs%3Disch:1)

Black and white aerial photo

This is an aerial photograph of the worlds largest wind energy center in Horse Hollow.


(http://www.virtualbirdseye.com/2008/07/01/worlds-largest-wind-farm-horse-hollow-wind-energy-center-aerial-view/)

Infrared Aerial Photo

Taken by the Kansas Geological Survey, this is an infrared aerial photograph of a forest canopy. Note how much more of the actual canopy is visible when the photograph has been infrared.This is in response of forest to climatic events and human management.

(http://images.google.com/imgres?imgurl=http://www.kgs.ku.edu/Current/2002/aber/jpegs/fig16.jpg&imgrefurl=http://www.kgs.ku.edu/Current/2002/aber/aber6.html&usg=__4u4pdaVkD0KOT6WDQIn3-Wh7Yhk=&h=392&w=600&sz=108&hl=en&start=18&um=1&itbs=1&tbnid=_1KlgZsmp2hnnM:&tbnh=88&tbnw=135&prev=/images%3Fq%3Dinfrared%2Bphoto%2Bkansas%2Bgeological%2Bsurvey%26um%3D1%26hl%3Den%26client%3Dfirefox-a%26sa%3DN%26rls%3Dorg.mozilla:en-US:official%26tbs%3Disch:1)