{
  "metadata": {
    "title": "Martian Crustal Magnetic Field Heterogeneity & Biological Landing Site Assessment",
    "model": "Langlais et al. (2019) MAVEN/MGS Model",
    "doi": "10.1029/2019JE005979",
    "authors": [
      "Richard Barker",
      "Adriana Kaley Sanchez",
      "Manisha Dagar",
      "Katrina Boland",
      "Cau\u00ea Sciascia Borlina",
      "D. Marshall Porterfield"
    ],
    "affiliation": "Purdue University",
    "version": "1.0.0"
  },
  "statistics": {
    "global_mean_400km": 15.05,
    "global_median_400km": 1.51,
    "global_max_400km": 361.09,
    "northern_lowlands_mean": 0.94,
    "southern_highlands_mean": 29.31,
    "total_sites": 13,
    "high_field_sites": 2,
    "moderate_field_sites": 0,
    "low_field_sites": 11,
    "reference_earth_gmf": 50000.0
  },
  "landing_sites": [
    {
      "name": "Perseverance (Jezero Crater)",
      "mission": "NASA Mars 2020",
      "lat": 18.445,
      "lon": 77.451,
      "Bmag_400km": 2.75,
      "Br": -1.42,
      "Btheta": -0.09,
      "Bphi": 0.74,
      "B_surface_est": 23.4,
      "classification": "low/null-field",
      "geological_setting": "Octavia E. Butler Landing / Delta Fan",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Curiosity (Gale Crater)",
      "mission": "NASA MSL",
      "lat": -4.589,
      "lon": 137.442,
      "Bmag_400km": 3.18,
      "Br": -0.07,
      "Btheta": 1.63,
      "Bphi": -0.87,
      "B_surface_est": 27.0,
      "classification": "low/null-field",
      "geological_setting": "Bradbury Landing / Crater Interior",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "InSight (Elysium Planitia)",
      "mission": "NASA Discovery",
      "lat": 4.502,
      "lon": 135.623,
      "Bmag_400km": 1.99,
      "Br": 0.84,
      "Btheta": -0.09,
      "Bphi": -0.63,
      "B_surface_est": 2013.0,
      "classification": "high-field",
      "geological_setting": "Smooth Volcanic Plain (IFG Ground Truth)",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Opportunity (Meridiani Planum)",
      "mission": "NASA MER-B",
      "lat": -1.946,
      "lon": 354.473,
      "Bmag_400km": 2.55,
      "Br": 1.1,
      "Btheta": 1.43,
      "Bphi": -1.43,
      "B_surface_est": 21.6,
      "classification": "low/null-field",
      "geological_setting": "Challenger Memorial Station / Hematite Plain",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Spirit (Gusev Crater)",
      "mission": "NASA MER-A",
      "lat": -14.568,
      "lon": 175.473,
      "Bmag_400km": 9.08,
      "Br": -7.56,
      "Btheta": 2.9,
      "Bphi": 2.97,
      "B_surface_est": 77.2,
      "classification": "low/null-field",
      "geological_setting": "Columbia Memorial Station / Anomaly Margin",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Phoenix (Vastitas Borealis)",
      "mission": "NASA Scout",
      "lat": 68.219,
      "lon": 234.251,
      "Bmag_400km": 0.48,
      "Br": 0.05,
      "Btheta": -0.26,
      "Bphi": 0.13,
      "B_surface_est": 4.1,
      "classification": "low/null-field",
      "geological_setting": "Green Valley / Polar Subsurface Ice Sheet",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Viking 1 (Chryse Planitia)",
      "mission": "NASA Viking",
      "lat": 22.48,
      "lon": 312.05,
      "Bmag_400km": 0.59,
      "Br": -0.0,
      "Btheta": 0.07,
      "Bphi": 0.18,
      "B_surface_est": 5.0,
      "classification": "low/null-field",
      "geological_setting": "Thomas Mutch Memorial Station / Outflow Plain",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Viking 2 (Utopia Planitia)",
      "mission": "NASA Viking",
      "lat": 47.967,
      "lon": 134.28,
      "Bmag_400km": 0.39,
      "Br": -0.01,
      "Btheta": -0.18,
      "Bphi": -0.29,
      "B_surface_est": 3.3,
      "classification": "low/null-field",
      "geological_setting": "Demagnetized Impact Lowland Plain",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Zhurong (Utopia Planitia)",
      "mission": "CNSA Tianwen-1",
      "lat": 25.066,
      "lon": 109.925,
      "Bmag_400km": 0.76,
      "Br": -0.22,
      "Btheta": -0.26,
      "Bphi": -0.57,
      "B_surface_est": 6.5,
      "classification": "low/null-field",
      "geological_setting": "Southern Utopia Sedimentary Basin",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "ExoMars (Oxia Planum)",
      "mission": "ESA/Rosalind Franklin",
      "lat": 18.275,
      "lon": 335.368,
      "Bmag_400km": 1.82,
      "Br": 0.2,
      "Btheta": -0.54,
      "Bphi": 0.65,
      "B_surface_est": 15.5,
      "classification": "low/null-field",
      "geological_setting": "Clay-Rich Lowland Lacustrine Plain",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Arcadia Planitia (Candidate)",
      "mission": "Human Exploration",
      "lat": 39.3,
      "lon": 189.7,
      "Bmag_400km": 0.71,
      "Br": -0.29,
      "Btheta": 0.39,
      "Bphi": 0.14,
      "B_surface_est": 6.0,
      "classification": "low/null-field",
      "geological_setting": "Shallow Subsurface Glacial Ice Candidate",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Deuteronilus Mensae (Candidate)",
      "mission": "Human Exploration",
      "lat": 39.1,
      "lon": 23.2,
      "Bmag_400km": 0.7,
      "Br": 0.1,
      "Btheta": -0.41,
      "Bphi": -0.35,
      "B_surface_est": 5.9,
      "classification": "low/null-field",
      "geological_setting": "Lobate Debris Aprons / Glacial Slopes",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    },
    {
      "name": "Terra Sirenum Anomaly (Science)",
      "mission": "Human Outpost",
      "lat": -30.0,
      "lon": 195.0,
      "Bmag_400km": 140.07,
      "Br": 110.78,
      "Btheta": 85.7,
      "Bphi": 1.94,
      "B_surface_est": 1190.6,
      "classification": "high-field",
      "geological_setting": "Intense Crustal Magnetic Lineation / Mini-Magnetosphere",
      "source": "Langlais et al. (2019) MAVEN/MGS Model"
    }
  ]
}