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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea
@tracers-in-the-sea.bsky.social
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I am a good bot posting excerpts from the seminal text by W.S. Broecker and T-H Peng for you. Many oceanographers started their journey of ocean discovery with this text
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 45m
🌊🧪 As we shall see, these differences are largely the result of cycling by organisms. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 12h
situation is likely to have changed again. This is why we say that any model of future CO2 levels must accommodate itself to a wide range of scenarios. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 12h
🌊🧪 Reacting to these unforeseen events energy growth predictions have been dramatically modified. The example shown in figure 10-5 is that released by Exxon at the time this book was being written. It calls for a 2% per year growth rate during the next 20 years. Even as you read this book the
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 1d
🌊🧪 The interaction of this life cycle with the large-scale water circulation pattern in the sea results in inhomogeneities in the distribution of these species, not only within the sea itself but also in the sediments deposited on the ocean floor. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 1d
little trouble picking up all the oak leaves which fall. He decides that he has landed an easy job. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 1d
by raking one of the plots clean and then to spend the day picking up each oak leaf that falls to the ground within the plot. These leaves are to be put into a box for weighing at the end of each day. On the first day, the assistant chooses a plot containing only oaks. The air is calm, and he has
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 1d
🌊🧪 An analogy will help to clarify this situation. A botanist receives a grant to study the process of 'leaf detachment.' He hires a research assistant and takes him off to a nearby experimental forest where he has marked off several study plots. The assistant is instructed to begin each day
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 2d
🌊🧪 As chemical oceanographers, we wander through the plant measuring inputs, outputs, and internal compositions - trying to reconstruct the missing design. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 2d
🌊🧪 They play a minor role in the story we have to tell. - Broecker and Peng (1982), Tracers in the Sea
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 3d
equatorward in surface water than do those of silicate). This difference must be the chemical imprint of high diatom productivity! - Broecker and Peng (1982), Tracers in the Sea
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 3d
🌊🧪 In this connection, we can point back to Figure 1-18, which shows the distribution of NO₃ and H₄SiO₄ in high-latitude surface waters. It is clear from these distributions that silicate is depleted from the water before nitrate (i.e., high concentrations of nitrate extend much further
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 3d
and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 3d
buried in sediments show no evidence of corrosion, it is likely that the fate of most old nodules is permanent burial. If so, then the ratio of nodule growth rate to sedimentation rate can be used to predict the density of nodules (i.e., the plums ) in the sediment (i.e., the pudding). - Broecker
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 3d
🌊🧪 If the process of nodule formation has reached steady state (as it must), then for each new nodule which nucleates, an old one must become buried in the sediment. The nodules so buried could either accumulate as plums in the sediment pudding, or be dissolved away. As the nodules found
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 4d
(1982), Tracers in the Sea
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 4d
in oil prices. As can be seen in figure 10-4 the growth rate dropped dramatically. Serious questions with regard to the safety of nuclear power plants and concerns with regard to the storage of the radioactive 'ashes' from these plants have been raised during the last decade. - Broecker and Peng
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 4d
🌊🧪 One has only to consider the events of the 1970's to realize how hazardous it is to make long range energy use forecasts. A typical forecast of late 1960 called for growth rates of from 3% to 4% per year in energy usage. Then came the Arab oil boycott. Soon after came the rapid increases
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 4d
🌊🧪 It is not surprising, then, that the primary chemical differences observed in the ocean are all of the type just mentioned: deep water is enriched relative to surface water. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 5d
equatorial oceans too small. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 5d
🌊🧪 Further, in order to make these maps page-sized, we have stretched the distance between latitude lines by a factor of two. Finally, we have not compensated for the poleward shortening of the distance around the globe on a given latitude. This makes the polar oceans look too large and the
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 5d
🌊🧪 Others show very large changes in concentration from place to place. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 6d
Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 6d
🌊🧪 The results of such a study (221) are consistent with the prediction made from the mean age of surface nodules and the mean accumulation rate of the sediment. The number of nodules in a sediment layer several meters thick is about the same as the number of nodules on the surface! -
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tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 6d
covering several belt cycles, their distribution would not depend on where they entered or left. Rather, it would depend on the speed of the belts and the efficiency of the monsters. - Broecker and Peng (1982), Tracers in the Sea
tracers-in-the-sea.bsky.social
Out of Context Tracers in the Sea @tracers-in-the-sea.bsky.social · 6d
lower level, relatively close to their point of ascent). On the lower floor, more people would be at one end of the building than at the other (the steady movement of the lower-level belt would carry the wanderers toward the crowded end). As long as people remained in the funhouse for a period
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