/* DATA DESCRIPTION: Citation: Cohen, Marcelo Cancela Lisboa (2023): Ground Control Points of tidal flats at Port Fourchon-Louisiana, USA [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.954538 Abstract: Ground Control Points (GCPs) of tidal flats at Port Fourchon-Louisiana-USA with longitude, latitude, elevation and differences (m) between latitudes longitudes and elevation obtained in Oct/2017, Mar/2018, Nov/2018, Nov/2019, Nov/2021 and Jul/2022 by aerophotogrammetry from a DJI Phantom 4 Advanced and RTK drone and those obtained in the field by a Trimble Catalyst receiver, supported by a differential Global Navigation Satellite System with a millimetric correction (precision ± 2 cm) and an electronic Self Leveling Horizontal Rotary Laser (precision ± 2 cm). These data were used to evaluate the digital elevation model (DEM) acquired by photogrammetry. The vertical differences between GCPs and the DEM were evaluated by equation Zdif = ZDEM - Zgrd, where Zdif = the vertical differences, ZDEM = the Z value of the DEM, and Zgrd = the Z value of the GCPs. Funding: Conselho Nacional de Desenvolvimento Científico e Tecnológico, grant/award no. CNPQ 403239/2021-4: Impacts of the climate change on the boreal and austral American mangroves limits during the Holocene and Anthropocene Coverage: MEDIAN LATITUDE: 29.122463 * MEDIAN LONGITUDE: -90.175753 * SOUTH-BOUND LATITUDE: 29.108411 * WEST-BOUND LONGITUDE: -90.272629 * NORTH-BOUND LATITUDE: 29.402201 * EAST-BOUND LONGITUDE: -90.153269 MINIMUM ELEVATION: 0.00 m a.s.l. * MAXIMUM ELEVATION: 2.09 m a.s.l. Event(s): Port_Fourchon-Louisiana * LATITUDE: 29.122000 * LONGITUDE: -90.176000 Parameter(s): Ground control point (GCP) * PI: Cohen, Marcelo Cancela Lisboa (https://orcid.org/0000-0001-9892-4719, mcohen80@hotmail.com) LONGITUDE (Longitude) * GEOCODE * PI: Cohen, Marcelo Cancela Lisboa (https://orcid.org/0000-0001-9892-4719, mcohen80@hotmail.com) LATITUDE (Latitude) * GEOCODE * PI: Cohen, Marcelo Cancela Lisboa (https://orcid.org/0000-0001-9892-4719, mcohen80@hotmail.com) ELEVATION [m a.s.l.] (Elevation) * GEOCODE * PI: Cohen, Marcelo Cancela Lisboa (https://orcid.org/0000-0001-9892-4719, mcohen80@hotmail.com) Longitude, difference (Longitude diff) * PI: Cohen, Marcelo Cancela Lisboa (https://orcid.org/0000-0001-9892-4719, mcohen80@hotmail.com) * COMMENT: between observation by photogrammetry and observation in the field by a topographic survey Latitude, difference (Latitude diff) * PI: Cohen, Marcelo Cancela Lisboa (https://orcid.org/0000-0001-9892-4719, mcohen80@hotmail.com) * COMMENT: between observation by photogrammetry and observation in the field by a topographic survey Elevation, difference [m] (Elevation diff) * PI: Cohen, Marcelo Cancela Lisboa (https://orcid.org/0000-0001-9892-4719, mcohen80@hotmail.com) * COMMENT: between observation by photogrammetry and observation in the field by a topographic survey License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 356 data points */ GCP Longitude Latitude Elevation [m a.s.l.] Longitude diff Latitude diff Elevation diff [m] 1 -90.16931800 29.11701200 0.78 -0.014713 0.000967 0.040 2 -90.16606100 29.11910600 0.72 0.004428 0.004298 0.010 3 -90.16776000 29.11748500 0.45 -0.003994 0.000603 0.040 4 -90.15476700 29.12790400 0.00 0.066736 0.030000 0.080 5 -90.15431700 29.12753100 0.45 0.088765 0.020000 0.100 6 -90.15326900 29.12627800 0.00 0.088842 0.003677 0.038 7 -90.15714400 29.12469500 1.13 0.065826 0.009959 0.030 8 -90.16681400 29.11903500 0.60 0.034000 0.303264 0.090 9 -90.16460000 29.12037500 1.18 0.018295 0.006667 0.030 10 -90.16113600 29.12216700 1.03 0.039914 0.006835 0.030 11 -90.16897800 29.11835200 0.27 -0.008730 0.008301 0.030 12 -90.16850000 29.11874500 0.21 -0.005413 0.009216 0.030 13 -90.16812500 29.11709300 0.20 -0.008472 -0.000703 0.020 14 -90.17029500 29.11776600 0.30 0.014279 -0.005867 -0.010 15 -90.17135800 29.11581000 1.00 0.002286 0.003633 -0.020 16 -90.17203400 29.11672300 0.61 0.003032 0.004055 0.003 17 -90.17087500 29.11542900 0.26 -0.000194 0.005523 -0.001 18 -90.17361500 29.11419500 0.75 0.002720 0.011527 -0.040 19 -90.17631100 29.11263500 0.78 0.006339 0.016190 0.003 20 -90.17390500 29.11553100 0.87 -0.022920 -0.040214 -0.002 21 -90.17884500 29.11073500 1.15 0.042000 0.046000 -0.020 22 -90.18184200 29.10841100 0.78 -0.636392 0.054000 -0.040 23 -90.18148500 29.10882400 0.54 0.190000 0.053000 0.020 24 -90.16927900 29.11702500 0.78 0.008734 -0.000714 0.030 25 -90.17619600 29.11471100 0.00 -0.000529 -0.003827 0.050 26 -90.18166600 29.10998600 0.00 0.001820 -0.002098 0.080 27 -90.18276500 29.11180200 0.00 -0.006467 -0.008261 0.070 28 -90.18270800 29.11159400 0.00 0.005128 0.006270 0.030 29 -90.18014400 29.11183400 0.78 -0.130523 -0.783544 0.050 30 -90.18149900 29.10987000 0.58 0.769515 -0.681291 0.080 31 -90.19069677 29.11536351 0.80 -0.023000 0.001000 0.080 32 -90.19016652 29.11431639 0.82 0.025000 0.002000 0.080 33 -90.27262901 29.40220097 0.08 -0.010000 0.001000 0.070 34 -90.17542554 29.15725036 2.09 0.037000 0.020000 0.090 35 -90.18374607 29.11241007 0.20 0.023000 0.010000 0.100 36 -90.18330629 29.11229771 0.31 0.044000 0.013000 0.060 37 -90.18279381 29.11217180 0.31 0.049000 0.012000 0.060 38 -90.18282984 29.11196535 0.46 0.037000 0.323000 0.040 39 -90.18344190 29.11183377 0.30 0.032000 0.056000 0.100 40 -90.18342126 29.11122964 0.42 0.025000 0.043000 -0.020 41 -90.18442454 29.11149069 0.41 -0.045000 0.018000 -0.040 42 -90.18511817 29.11275833 0.22 -0.008000 0.012000 0.080 43 -90.18360577 29.11592754 0.19 -0.008000 -0.021000 0.080 44 -90.18249316 29.11581338 0.19 0.014000 -0.015000 -0.010 45 -90.18229348 29.11597191 0.20 0.025000 0.033000 0.050 46 -90.18256824 29.11750025 0.19 0.027000 0.006000 0.040 47 -90.18092084 29.11767480 0.40 -0.020000 0.004000 0.000 48 -90.18065388 29.11726114 0.30 0.013000 0.012000 0.100 49 -90.18029993 29.11778024 0.38 0.012000 0.022000 0.020 50 -90.18157424 29.11834611 0.20 -0.029000 -0.021000 0.100 51 -90.17979119 29.11950689 0.19 0.043000 0.033000 0.060 52 -90.17871277 29.11907442 0.26 -0.032000 0.042000 0.100 53 -90.18069169 29.12028496 0.13 0.034000 0.074000 -0.030 54 -90.18066797 29.12046102 1.11 0.012000 -0.054000 0.080 55 -90.18044134 29.12074042 0.30 -0.004000 -0.021000 0.030 56 -90.17798680 29.12066791 0.30 0.043000 -0.031000 0.100 57 -90.17629609 29.12167940 0.30 -0.026000 -0.034000 0.040 58 -90.17247803 29.12269903 0.44 0.015000 0.012000 -0.070 59 -90.17396613 29.12483293 0.22 -0.030000 -0.041000 0.070 60 -90.17380542 29.12708151 0.70 0.069000 -0.036000 0.100 61 -90.17325054 29.12730165 0.35 0.012000 0.032000 0.030 62 -90.17525770 29.13295352 0.06 0.024000 0.012000 0.020 63 -90.17067997 29.13297452 0.05 -0.032000 -0.021000 0.050 64 -90.17382294 29.13579115 0.10 0.033000 0.014000 -0.050 65 -90.17399032 29.13560896 0.03 0.017000 0.023000 0.090 66 -90.17123578 29.13816305 0.12 -0.032000 -0.054000 -0.020 67 -90.17055395 29.12313720 0.30 0.075000 0.013000 -0.010 68 -90.16858257 29.12393073 0.80 -0.047000 0.042000 0.000 69 -90.16787752 29.12416421 0.69 0.043000 0.046000 -0.100 70 -90.16700951 29.12455065 0.39 0.021000 0.026000 0.060 71 -90.16418490 29.12573747 0.45 -0.023000 -0.021000 0.010 72 -90.16211471 29.12696577 0.38 0.023000 0.031000 -0.070 73 -90.16252570 29.12575242 0.42 -0.014000 -0.044000 0.080 74 -90.16321299 29.12530798 1.29 0.019000 0.022000 0.050 75 -90.16347944 29.12516513 0.46 -0.068000 -0.065000 0.010 76 -90.16686088 29.12389810 0.42 0.034000 0.034000 0.080 77 -90.16940172 29.12113039 0.21 0.012000 -0.042000 -0.010 78 -90.16904086 29.12049661 0.45 0.034000 0.032000 -0.050 79 -90.17279388 29.12001534 0.26 0.021000 0.026000 0.010 80 -90.17526493 29.12021927 0.30 -0.089000 -0.025000 0.100 81 -90.18179969 29.11550258 0.22 0.021000 0.014000 -0.090 82 -90.18260242 29.11311032 0.30 0.017000 0.028000 0.000 83 -90.18150111 29.11200832 1.49 0.023000 0.031000 0.020 84 -90.18100701 29.11134545 1.77 0.015000 0.018000 -0.100 85 -90.18365622 29.11015654 1.86 0.011000 0.024000 -0.100 86 -90.17724454 29.11476665 1.48 0.017000 0.028000 0.020 87 -90.17531057 29.11601451 1.50 0.015000 0.017000 0.000 88 -90.17340744 29.11727400 1.33 0.024000 0.015000 0.050 89 -90.17150143 29.11851633 1.38 0.007000 -0.008000 0.040