{
    "id": 5660,
    "url": "https://svs.gsfc.nasa.gov/5660/",
    "page_type": "Visualization",
    "title": "The Geoid",
    "description": "The geoid is an equipotential surface that can be thought of as the shape an ocean surface would take due to the Earth's gravity field. In this visualization the geoid height is greatly exaggerated, by a factor of 10,000. The geoid height visualized here comes from the gravity field model GOCO06s, a satellite-only global gravity field model computed by the GOCO (Gravity Observation Combination) project.",
    "release_date": "2026-07-15T11:59:00-04:00",
    "update_date": "2026-07-15T10:52:46.300460-04:00",
    "main_image": {
        "id": 1204577,
        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005600/a005660/geoid_print.png",
        "filename": "geoid_print.png",
        "media_type": "Image",
        "alt_text": "",
        "width": 1080,
        "height": 1080,
        "pixels": 1166400
    },
    "main_video": {
        "id": 1204572,
        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005600/a005660/geoid_2026-07-08_155228.mp4",
        "filename": "geoid_2026-07-08_155228.mp4",
        "media_type": "Movie",
        "alt_text": "",
        "width": 2160,
        "height": 2160,
        "pixels": 4665600
    },
    "main_credits": {
        "Visualizations by": [
            {
                "name": "Mark SubbaRao",
                "employer": "NASA/GSFC"
            }
        ]
    },
    "progress": "Complete",
    "media_groups": [
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            "id": 380514,
            "url": "https://svs.gsfc.nasa.gov/5660/#media_group_380514",
            "widget": "Video player",
            "title": "",
            "caption": "",
            "description": "The geoid is an equipotential surface that can be thought of as the shape an ocean surface would take due to the Earth's gravity field. The geoid height ranges from +85 m (Iceland) to −106 m (southern India). In this visualization the geoid height is greatly exaggerated, by a factor of 10,000. The geoid height visualized here comes from the gravity field model GOCO06s, a satellite-only global gravity field model computed by the GOCO (Gravity Observation Combination) project. It is based on over a billion observations acquired over 15 years from 19 satellites. These satellites include NASA's Gravity Recovery and Climate Experiment (GRACE) and ESA's Gravity field and steady-state Ocean Circulation Explorer (GOCE).",
            "items": [
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                    "id": 522446,
                    "type": "media",
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                    "title": null,
                    "caption": "",
                    "instance": {
                        "id": 1204574,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005600/a005660/geoid_GOCO06s.mp4",
                        "filename": "geoid_GOCO06s.mp4",
                        "media_type": "Movie",
                        "alt_text": "",
                        "width": 2160,
                        "height": 2160,
                        "pixels": 4665600
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                },
                {
                    "id": 522447,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": "",
                    "instance": {
                        "id": 1204576,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005600/a005660/geoid.png",
                        "filename": "geoid.png",
                        "media_type": "Image",
                        "alt_text": "",
                        "width": 2160,
                        "height": 2160,
                        "pixels": 4665600
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                },
                {
                    "id": 522448,
                    "type": "media",
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                    "caption": "",
                    "instance": {
                        "id": 1204577,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005600/a005660/geoid_print.png",
                        "filename": "geoid_print.png",
                        "media_type": "Image",
                        "alt_text": "",
                        "width": 1080,
                        "height": 1080,
                        "pixels": 1166400
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 380513,
            "url": "https://svs.gsfc.nasa.gov/5660/#media_group_380513",
            "widget": "3D model viewer",
            "title": "Geoid 3D Model",
            "caption": "A 3D model of the Geoid, with the geoid height exaggerated by a factor of 10,000.",
            "description": "",
            "items": [
                {
                    "id": 522445,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": "",
                    "instance": {
                        "id": 1204575,
                        "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005600/a005660/geoid.glb",
                        "filename": "geoid.glb",
                        "media_type": "File",
                        "alt_text": ""
                    }
                }
            ],
            "extra_data": {}
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    ],
    "studio": "svs",
    "funding_sources": [],
    "credits": [
        {
            "role": "Science advisor",
            "people": [
                {
                    "name": "Scott Luthcke",
                    "employer": "NASA/GSFC"
                }
            ]
        },
        {
            "role": "Visualizer",
            "people": [
                {
                    "name": "Mark SubbaRao",
                    "employer": "NASA/GSFC"
                }
            ]
        }
    ],
    "missions": [
        "Gravity Recovery and Climate Experiment (GRACE)"
    ],
    "series": [],
    "tapes": [],
    "papers": [
        "GOCO06s – a satellite-only global gravity field model"
    ],
    "datasets": [
        {
            "name": "GOCO06s",
            "common_name": "GOCO06s",
            "platform": "GRACE and GRACE-FO",
            "sensor": null,
            "type": "Model",
            "organizations": [],
            "description": "",
            "credit": "Andreas Kvas, Jan Martin Brockmann, Sandro Krauss, Till Schubert, Thomas Gruber, Ulrich Meyer, Torsten Mayer-Gürr, Wolf-Dieter Schuh, Adrian Jäggi, and Roland Pail",
            "url": "https://doi.org/10.5194/essd-13-99-2021",
            "date_range": ""
        }
    ],
    "nasa_science_categories": [
        "Earth"
    ],
    "keywords": [
        "Geodesy",
        "Geodetics",
        "Geodetics/Gravity"
    ],
    "recommended_pages": [],
    "related": [],
    "sources": [],
    "products": [],
    "newer_versions": [],
    "older_versions": [],
    "alternate_versions": []
}