GEOG 1300 Lecture Notes - Lecture 11: Desert Pavement, Dune, Flow Separation
21 Apr 2016
School
Department
Course
Professor
Document Summary
A sea is generally smaller than an ocean and tends to be associated with a landmass. Natural elements and compounds they form are found in seas as dissolved solids/sollutes b/c water is universal solvent. 99% dissolved solid = cl, na, mg, s, ca, k, br dissolved gases co2, n2, o2. Worldwide average 3. 5% brine salinity = greater than 3. 5: high evap rates in nearly enclosed basin. Brackish is less than 3. 5: occurs near landmasses b/c freshwater runoff and river discharges. Greatest in atlantic ocean above and below equator. Ocean absorbs co2, forms carbonic acid in seawater, reduces ocean ph. Current ocean ph is 8. 2 ph could decrease from 0. 5 units by end of century. Beach drift + sand movement + long shore current + effective wave direction +swash + backwash. Sea-level fluctuation exposes a range of coastal landforms to tidal and wave processes.
