GIS and Meteorite Recovery

When a meteor, meteorite hunters often just take a map, a GPS, and the head of the fall occurs. While this works, there is a better way to plan an expedition using GIS software (GIS). The use of open source software, free government data available online, and a couple of hours these meteorite hunters more before arriving at the fall of a meteorite. This, in turn, increase the number of fragments recovered meteorites and reduce the cost in terms of money, time and effort invested. GIS is software that takes the information with a geographic component and displays it on a map. As the lines showing where the rivers and streams, or points that show individual cases of West Nile virus. Each data line or point can be called to give more information about the registration data such as name, rate, and depth of a river or the name of the hospital, age, etc.

 a patient with West Nile virus. In essence, a database with geo-referencing. Each database is called a layer.

 You can easily break free of hydrology layers, use of land, crops, rainfall measurements, soil type, surface ownership of land, and many cultural data sets.

 Each layer is stacked on top of the base layer to give a representation of the map of the earth. Particular layer can be made invisible or translucent layers have other more obvious. There are a variety of GIS software available, the most common is ESRI ArcView but $ 1600 per seat and excessive for the purposes of meteoriticist. A better solution is to open source programs like Quantum GIS and gvSIG. Both are developed GIS software free, full and do spatial analysis. At that time, Quantum GIS is recommended because it is free, easy to learn, intuitive and easy to use data sets, even in older laptops. Download a copy Qgis.org. All GIS benefit from a good video card and more RAM. Google Earth is a mapping tool not GIS low grade. Do not be shot point layers, but the free version will not read other data layers or perform spatial analysis. In addition, it will not allow large print cards. This is a major drawback. Ironically, the IG users do not think it's cool, but it is a toy compared to the real GIS programs.

 GIS Hunter meteorites immediate needs down to two basic questions: a) Where is the scattered field? and b) What is the spread like? field To meet these needs a few layers of data to be obtained. The first will be the base map layer. A map is the important reference layer all the other layers are attached to. For a project of Texas, the background map would be the outline of the state of Texas, or satellite images, or a complete topographic map of the state of Texas. Whatever the base map makes sense to you is correct. Given that the average decline of meteorite must be less than a surface area of ​​30 km x 30 km, I recommend using a topographical map that the base map. Now that a base map is chosen, we need more data layers to assist in the search: -Main Roads Route Netherlands -PRIVATE Roads -Railroads -All Hydrology, lakes, rivers, streams, etc. -Cropland Designations Photos -TV (wanting identify reference buildings) -Vegetation Designations -Cadastral Data (polygons containing the names of the owners of the surface property) Type -Sol -Topography Most of these should be available in any government agency online for free or for a reasonable price. Some may not be, but as long as you have the majority, who are ahead of the game. Each layer has a use for meteorite hunter, and each use will describe here. Roads, major, minor and private, as well as the railways are important on three levels. First, if the fall was in a remote area of ​​this layer will tell how much you can get to the vehicle finish wheels. Second, this layer may be more current than the cards you have available to you may discover that you can drive on the target when published 10 years old cards that you have to walk the last 5 km. Third, in the US and in some countries the meteorites found on public roads and rights of way are easy for anyone prey. Private roads require permission to hunt, but it's good to know who is who. Hydrology becomes important in remote locations. It may be helpful to know the names of rivers and reference field notes hydrological characteristics. For drops of age, as Deport iron meteorites discovered 20 meters irons streams were buried deeper probably due to flood sediments. In the case of ash fall Creek in the town of West, Texas, just Hydrology helped define the limits and boundaries of the properties that were not visible on published maps. Facts farmland is good to know where to start searching as soon as you arrive on site. Before you go, you can know that in April, the northern half of the field should be scattered cornfields. It could be that there are fallow in southern areas. Once the meteorite hunter arrives on the scene, farmland confirmatory data is required. In the case of the former, the results of meteorite hunters could focus on talking to the specific type of operations, such as cotton, which tends to be more disturbed soil than other crops. I used my Niningeresque review in parts of West Texas to recover several meteorites.

 Satellite photos are great in many ways. First, it gives the size of a parcel of land on the basis of vegetation cover color.

 In the US, a "section" of the earth is a square mile is 640 acres. An aerial photograph can show five parcels in this article, which suggests that may not have to ask permission to 5 people to hunt. The pictures also show areas that are timbered or have other vegetative tips that indicate good or bad hunting areas. vegetation of a different description of cultivated land, because it must cover the entire area, not just agricultural areas. You might say that the vast majority of the land is covered with 2 cm foam, which is terrible. As it was for us to hunt down an old Stelldaellen, Sweden, but great for a further decline. Previously, areas of poor hunting can be identified as wetlands and marshes, which will improve the hunt for not wasting time on these poor regions and change the effort of hunting areas indicated for higher ground with vegetation sparse. Area locations held by the same plots of real estate. Basically, this polygon shapes owners. This can be a difficult film to get, but is very useful. You know who owns the land, and you can make phone calls without having to call a tenant or tenants door and get the owner's name. This layer of large amounts of meteorite hunters to find time in the field will be saved. Remember, the landlord may give permission to hunt the land and keep the found meteorites, not the tenant. Type of soil layers are more useful with age and game falls after the oldest conclusions. This film was available to me on an expedition in Karatu, Tanzania, has abandoned this goal. This is because when I got to the landing area Karatu, I discovered that the area was black volcanic rocks with ferrous component and was looking for rockfall 40 years. It was horrible ground trying to hunt, and almost impossible to train people to distinguish meteorwrong meteorite. Most US states have good soil type maps. Once the meteorite hunter is on site, there are two layers to be created. First, it is a layer that will be the location points located in the meteorites. This will be necessary to begin to see patterns and establish a scattered line direction. The second layer is a layer of polygons indicating areas that have been searched and reduce duplication of effort. This layer will be useful for meteorite hunter using visible landmarks that can be seen from the mole of the layer or aerial photography to start and stop their research. Deport hunting for iron I used telephone poles and the edges of the fields that my reference points as they were presented to aerial photographs of 1m resolution. These layers can be obtained from many sources.

 I discovered that the source of the best and most accurate data is in the lowest level of government. Ash Creek, Texas wines resolution satellite images 1m TNRIS Information System (Texas Natural Resources), the topology of a CD was produced and land cover came from another state agency. Of course, I had to ask local meteorite hunters where they found rocks and size. This then gives me the final map on the ashfall brook known to exist. I went to find eight stones up to half a kilo. In short, the GIS should be in every toolbox meteorite hunters with your magnet, cane, hat, Doppler radar, water bottles and hiking boots. This is the tool of evil Presort right field to optimize the little time you have in a fall. Instead, that can be used for tracking results better known to eliminate scattered field. It must also be used to quickly and efficiently identify the owners of the interface for permits

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