{"first_sentence": {"type": "/type/text", "value": "At distances of more than 100 km or so from the equator, ocean currents on time scales longer than a few days and space scales longer than a few tens of kilometers are very nearly in geostrophic balance."}, "physical_format": "Hardcover", "subtitle": "A Handbook of Techniques and Applications (International Geophysics)", "weight": "3.4 pounds", "languages": [{"key": "/l/eng"}], "type": {"key": "/type/edition"}, "publishers": ["Academic Press"], "number_of_pages": 463, "isbn_13": ["9780122695452"], "id": 12534143, "edition_name": "1st edition", "isbn_10": ["0122695453"], "publish_date": "October 13, 2000", "key": "/b/OL9281462M", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 09:38:13.731961"}, "title": "Satellite Altimetry and Earth Sciences", "contributions": ["Lee-Lueng Fu (Editor)", "Anny Cazenave (Editor)"], "subjects": ["Oceanography (seas)", "Satellite communication", "Science/Mathematics", "Oceanography", "Technology", "Geophysics", "Satellite Communication Technology", "Science", "Satellite geodesy", "Remote sensing", "Aeronautics & Astronautics", "Earth Sciences - Oceanography", "General", "Science / Oceanography", "Technique", "Engineering - Electrical & Electronic"], "physical_dimensions": "11 x 8.7 x 0.8 inches", "revision": 1}