| 21. | At Philips Point spring tides rise 25 to 30 feet, and neap tides from 16 to 20 feet.
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| 22. | Spawning takes place between June and October, at night at two-weekly intervals coinciding with neap tides.
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| 23. | Spring ( and the opposite, neap ) tides result from the relative positions of Earth, Moon and Sun.
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| 24. | Generally it is located on rock surfaces rather than under stones, and is often found above neap high water mark.
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| 25. | Because the tidal speed doubles, eight times more tidal power can be produced at spring tides than at neap tides.
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| 26. | The semimonthly markings created by spring and neap tides are prominent and easier to identify and count than the daily tidal marks.
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| 27. | The NEAP mission is expected to cost less than $ 50 million, about $ 15 million for each of three instruments:
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| 28. | Smith is one of the scientists who have notified NASA that they intend to propose experiments for Benson's NEAP mission.
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| 29. | At neap tides, this interaction is less pronounced, without tides surges would occur more randomly, approximately every 12 hours.
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| 30. | This latter approach had caused problems at spring tides, although on neap tides Giant's Grave still had to be used.
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