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<p>Welcome to the 21th Daily Field Note! Here you find the top post of the day, one covering each scientific field that is included by Geopolis. Since these authors put a lot of effort in writing a good post they surely deserve the extra exposure.</p>
<p>Geopolis is a project to promote and connect authors who write in the fields of global sciences. Upvotes are currently worth <strong>more than $1,50</strong> so don't hesitate to get involved or become a member for higher rewards! You can read more about the project and how to join here:</p>
<p><a href="https://steemit.com/geopolis/@geopolis/geopolis-the-community-for-global-sciences-update-3">https://steemit.com/geopolis/@geopolis/geopolis-the-community-for-global-sciences-update-3</a></p>
<p>Subjects curated by Geopolis are Geography, Anthropology, Ecology, Geology, Archeology and certain branches of History.</p>
<p><img src="https://lh3.googleusercontent.com/fpnXF1F6fAc8jftHhCsh_PyU1P_OX55Nx9A6G6gAMbxKE0QU54nFVK0-zxA2Ok84OXc8CHF0NagaJWZZi0-4GCw8G5SrSqfREbeP9vFpQVLLOXi0hI8F2n311D8Ya0NbS_9u569-9Yfu_W1Uw57jpQ8Gc5mqDQ04gF5N_pT22EZA9bC5OmhkDVqvd4MnVP95omuPrgAjCK38zRgI7pI77c8UgijdjlLjRHqdeVryHDqzDW5j7YqWcb9NkX1EpSKLEVQGkr10n0Y_Qov13zdCGrSE-p2QhxLsn6xt1Z8DoA73U30wFuE_qwP-ZZJPpc3x-e_BjJIVT--5uemekR_zhvpwy0Y2PWi3I2gXkasE6JAoPPNeiGlViHqcZyvaPgdXJEUJK9auqLZ_A-cFef2aZJBG-oCDRE5jd6onKlDte-oofIsrfWhdTQxsd3q9ziiGYm59uYlSvYPdQTqc7O2UeOZc2x_-cuDFm8V_3r4TdcRggX3Q3XsnE7a0Zi9VO0DatRcEop2FuO11jWUNbJrpCEab8ED3vvZJHeoEFu_XI6WBwAmyMFyNhLQ7s7nR2KToXsqb1clzkztFrg0MuEbTR6TJrbPrDXgAySIyjK0=w1170-h901-no" /></p>
<p><img src="https://lh3.googleusercontent.com/u9mzrls2qN-8DwNSoOxXahD6s9aXeH7bsMZ3dQ-WR6B9uVJGgq4g4_lJo6aPybIbQg9ZfFrCm5mXgPQNDyf7-m4g6dOtEo-bEuvtDMPmWUoWsKlVsIuL3ph4lv4AjTXMlaKmYIODIp2AvsTJLhh1MZcs0EM0M3HEi9R_3dGey7bnHo6r9WLNOWex0k5EQh4ex1NCD0vXYn9-v1uw70VGLCqrKGXwmEGiVatXDmsBcdaYEFSmZAfUh7Pu774nz2VTfeL7IF5UpWhEdDymXFuB924s13b9qn6YrWyVkj4x7uYuVdELxqVof4Nsd5BQrwCbubrEVJ--FcD-sgjkkEIW9UarJ0sW_8qijrO39S4I_5_mTvFq36ZRPfADnrJnybzemfEGcJUPcDgp8b2Zxj8cQj0r2aOvlUbz50J48EJKqnW5MFEo70vXZGmyuPGZtCXXSIlxmZaHqhnT_YnKXiT_5wysG7xAFkjPVe1NY9thAQB9uAaMcZtdwcGJ4XV_BFNXgR54WaKdwS31Y2uWRRKyjL8tWwCMS-hTMpsSdlYkl56H_PqmNbnOFyIN6c-3IJdOc5qIpjc3QnToKZy6MpYbicdvnuu4X38aVse1L7Q=w1855-h140-no" /></p>
<h2>geography: Use of Drones (UAV) for cartographic purposes</h2>
<p>Drones are revolutionizing so many parts of our lives. They an be used for a tremendous amount of tasks, from rescue missions to package delivery. Therefor it is interesting to see them being used for cartographic purposes by @jlmol7. Personally I am looking forward to hear more about this application.</p>
<p><a href="https://steemit.com/geology/@jlmol7/use-of-drones-uav-for-cartographic-purposes">Original Post</a></p>
<p><img src="https://steemitimages.com/0x0/https://steemitimages.com/DQmQPZDkvCAhEoPKEVYrtPSaTTfvAVUq2dQxiWEgHwC6q7j/DJI_0049_opt.jpg" width="300" height="300" /></p>
<blockquote>
<p>Hi guys, for this post I want to talk a little about the use of UAV in the area of geomatics. These UAV are those that we popularly know as Drones. For those who do not know the term, geomatics is no more than a set of earth sciences in which there is an integration of certain media in which geographic information is captured, processed, analyzed, interpreted and stored. Now, the technological development that has been evidenced in geospatial acquisition processes in recent years, brings with it a new paradigm for Geomatics associated with the use of unmanned aerial vehicles given the potential and broad spectrum of applications that these devices offer moment to capture data and info...</p>
</blockquote>
<p><img src="https://lh3.googleusercontent.com/u9mzrls2qN-8DwNSoOxXahD6s9aXeH7bsMZ3dQ-WR6B9uVJGgq4g4_lJo6aPybIbQg9ZfFrCm5mXgPQNDyf7-m4g6dOtEo-bEuvtDMPmWUoWsKlVsIuL3ph4lv4AjTXMlaKmYIODIp2AvsTJLhh1MZcs0EM0M3HEi9R_3dGey7bnHo6r9WLNOWex0k5EQh4ex1NCD0vXYn9-v1uw70VGLCqrKGXwmEGiVatXDmsBcdaYEFSmZAfUh7Pu774nz2VTfeL7IF5UpWhEdDymXFuB924s13b9qn6YrWyVkj4x7uYuVdELxqVof4Nsd5BQrwCbubrEVJ--FcD-sgjkkEIW9UarJ0sW_8qijrO39S4I_5_mTvFq36ZRPfADnrJnybzemfEGcJUPcDgp8b2Zxj8cQj0r2aOvlUbz50J48EJKqnW5MFEo70vXZGmyuPGZtCXXSIlxmZaHqhnT_YnKXiT_5wysG7xAFkjPVe1NY9thAQB9uAaMcZtdwcGJ4XV_BFNXgR54WaKdwS31Y2uWRRKyjL8tWwCMS-hTMpsSdlYkl56H_PqmNbnOFyIN6c-3IJdOc5qIpjc3QnToKZy6MpYbicdvnuu4X38aVse1L7Q=w1855-h140-no" /></p>
<h2>geology: Minerals: Metamorphic rocks</h2>
<p>A specific type of material, clay for example, can be found in so many forms, from just clay in its individual form, to gneiss as the most metamorphic form of clay. To know how these transformations of various materials occur, you should read @big-world's post.</p>
<p><a href="https://steemit.com/geology/@big-world/minerals-metamorphic-rocks">Original Post</a></p>
<p><img src="https://steemitimages.com/0x0/http://www.luckysci.com/wp-content/uploads/2014/08/metamorphic-rock-series.jpg" width="300" height="300" /></p>
<blockquote>
<p>Good afternoons steemians. Today once again I am here to talk a little about what metamorphism is, its types, degrees and others. And I leave you this interesting topic below --- METAMORPHIC ROCKS Metamorphic rocks are formed from igneous, sedimentary rocks or even other metamorphic rocks. Therefore, all metamorphic rocks have a parent rock ie the rock from which they were formed. Metamorphism It is a process that causes changes in the mineralogy, the texture and, often, the chemical composition of the rocks, and takes place when the rocks undergo a physical or chemical environment different from their initial formation. And those factors that cause metamorphism are heat, pressure a...</p>
</blockquote>
<p><img src="https://lh3.googleusercontent.com/u9mzrls2qN-8DwNSoOxXahD6s9aXeH7bsMZ3dQ-WR6B9uVJGgq4g4_lJo6aPybIbQg9ZfFrCm5mXgPQNDyf7-m4g6dOtEo-bEuvtDMPmWUoWsKlVsIuL3ph4lv4AjTXMlaKmYIODIp2AvsTJLhh1MZcs0EM0M3HEi9R_3dGey7bnHo6r9WLNOWex0k5EQh4ex1NCD0vXYn9-v1uw70VGLCqrKGXwmEGiVatXDmsBcdaYEFSmZAfUh7Pu774nz2VTfeL7IF5UpWhEdDymXFuB924s13b9qn6YrWyVkj4x7uYuVdELxqVof4Nsd5BQrwCbubrEVJ--FcD-sgjkkEIW9UarJ0sW_8qijrO39S4I_5_mTvFq36ZRPfADnrJnybzemfEGcJUPcDgp8b2Zxj8cQj0r2aOvlUbz50J48EJKqnW5MFEo70vXZGmyuPGZtCXXSIlxmZaHqhnT_YnKXiT_5wysG7xAFkjPVe1NY9thAQB9uAaMcZtdwcGJ4XV_BFNXgR54WaKdwS31Y2uWRRKyjL8tWwCMS-hTMpsSdlYkl56H_PqmNbnOFyIN6c-3IJdOc5qIpjc3QnToKZy6MpYbicdvnuu4X38aVse1L7Q=w1855-h140-no" /></p>
<h2>ecology: Walking Among Giants: Why Do Big Animals Get Big?</h2>
<p>You can only grasp the real size of majestic beasts such as the elephant or giraffe when you stand next to them. But these creatures are nothing compared to the giants that roamed the earth in the past. But why exactly is it that animals get big? @mountainwashere wrote a very interesting post about it.</p>
<p><a href="https://steemit.com/nature/@mountainwashere/walking-among-giants-why-do-big-animals-get-big">Original Post</a></p>
<p><img src="https://res.cloudinary.com/hpiynhbhq/image/upload/v1517568590/z1cdz2tfjxp3rn4cw5rr.png" width="300" height="300" /></p>
<blockquote>
<p>Why do elephants, whales, and other big animals, including extinct ones like dinosaurs, get so large? This is actually two different questions- one for land animals, and one for aquatic animals. Let's cover land animals first. Argentinosaurus, a leading candidate for the largest land animal of all time. ] In order to discuss the true giants, we're actually going to go down in size quite a bit- down to insect scale, in fact. Meganeura, an inhabitant of the Carboniferous era was the largest dragonfly to ever live, with a wingspan of 27 inches. The largest dragonfly today has a wingspan of only 7.5 inches. So how'd Meganeura get so big? Well, there are a few theories regarding that. Th...</p>
</blockquote>
<p><img src="https://lh3.googleusercontent.com/u9mzrls2qN-8DwNSoOxXahD6s9aXeH7bsMZ3dQ-WR6B9uVJGgq4g4_lJo6aPybIbQg9ZfFrCm5mXgPQNDyf7-m4g6dOtEo-bEuvtDMPmWUoWsKlVsIuL3ph4lv4AjTXMlaKmYIODIp2AvsTJLhh1MZcs0EM0M3HEi9R_3dGey7bnHo6r9WLNOWex0k5EQh4ex1NCD0vXYn9-v1uw70VGLCqrKGXwmEGiVatXDmsBcdaYEFSmZAfUh7Pu774nz2VTfeL7IF5UpWhEdDymXFuB924s13b9qn6YrWyVkj4x7uYuVdELxqVof4Nsd5BQrwCbubrEVJ--FcD-sgjkkEIW9UarJ0sW_8qijrO39S4I_5_mTvFq36ZRPfADnrJnybzemfEGcJUPcDgp8b2Zxj8cQj0r2aOvlUbz50J48EJKqnW5MFEo70vXZGmyuPGZtCXXSIlxmZaHqhnT_YnKXiT_5wysG7xAFkjPVe1NY9thAQB9uAaMcZtdwcGJ4XV_BFNXgR54WaKdwS31Y2uWRRKyjL8tWwCMS-hTMpsSdlYkl56H_PqmNbnOFyIN6c-3IJdOc5qIpjc3QnToKZy6MpYbicdvnuu4X38aVse1L7Q=w1855-h140-no" /></p>
<h3>This was todays selection of post. Make sure to check out other authors and upvote this post to support the project!</h3>
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