the sea level started to rise 3000 years ago.
the sea level started to rise 3000 years ago.
when did the sea level start to rise?
3000 years ago
the sea level has risen more than since the [[last glacial maximum]] about 20,000 years ago. the bulk of that occurred before 7000 years ago. global temperature declined after the [[holocene climatic optimum]], causing a sea level lowering of between 4000 and 2500 years before present. from 3000 years ago to the start of the 19th century, sea level was almost constant, with only minor fluctuations. however, the [[medieval warm period]] may have caused some sea level rise; evidence has been found in the pacific ocean for a rise to perhaps above present level in 700 bp.
physical impacts of climate change
the model 28 receiving selector, also known as the lrs, converts incoming serial teletypewriter signals into parallel-wire intelligence. this equipment is capable of operating at 60, 75 or 100 words per minute and operates on a five-level start-stop code, with an option for six-level start-stop code. this unit is equipped with two types of contacts - code reading and timing contacts. the model 28 receiving selector, equipped with a standard 115 vac 60 hz synchronous motor, is 8 inches high, 8.5 inches wide and 9.75 inches deep and weighs 16.5 pounds.









































"model 28 tape punch"
teletype model 28