1. Ocean sediments are special, because they can be used to find out climate change of water surfaces of oceans and of areas on continents next to these oceans.
2. Ocean sediments are good for predicting the climate of past surface water temperatures, salinity, dissolved oxygen and nutrient availability. Also using inorganic materials found in ocean sediments can be used to find information about continental humidity-aridity variations and intensities/directions of winds.
3. Things that set Ocean sediments apart from other proxies is that there are billions of tonnes found on ocean basins every year, so there is almost always availability to this source.
4. The areas that Ocean sediments truly excel is in coastal continental areas and finding out surface temperatures in the surrounding waters, these sediments are good for determining climate change of these locations. They are also able to help find these changes from ranges of thousands of years all the way to ten million years in the past.
5. Ocean Sediments would prefer to work in areas that are coastal, such as off the coast of California, Alaska, Australia, and basically anywhere that has a surrounding area of water that has sediments for study.
Source: http://www.global-climate-change.org.uk/3-3-4.php
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