03-21-2015, 03:29 PM
Quote:Like everything else touched by the ClimAstrologists. Sea leve has been spindled and mutilated.
The chart from WIKI is shown by everyone even Steve:
NOTE: The data is not raw data but adjusted data.
This figure shows changes in sea level during the Holocene, the time following the end of the most recent glacial period, based on data from Fleming et al. 1998, Fleming 2000, & Milne et al. 2005. These papers collected data from various reports and adjusted them for subsequent vertical geologic motions, primarily those associated with post-glacial continental and hydroisostatic rebound….
Notice the seal level does nothing but rise. However the actual science shows a different story.
TEN STUDIES PROVING SEA LEVEL IS NOT RISING AFTER HOLOCENE OPTIMUM
Mid to late Holocene sea-level reconstruction of Southeast Vietnam using beachrock and beach-ridge deposits
….backshore deposits along the tectonically stable south-eastern Vietnamese coast document Holocene sea level changes…..reconstructed for the last 8000 years….The rates of sea-level rise decreased sharply after the rapid early Holocene rise and stabilized at a rate of 4.5 mm/year between 8.0 and 6.9 ka. Southeast Vietnam beachrocks reveal that the mid-Holocene sea-level highstand slightly above + 1.4 m was reached between 6.7 and 5.0 ka, with a peak value close to + 1.5 m around 6.0 ka….
Translation the sea level was up to 1.5 meters higher than today in a tectonically stable area ~5000 years ago to 2000 years ago.
Sea-level highstand recorded in Holocene shoreline deposits on Oahu, Hawaii
Unconsolidated carbonate sands and cobbles on Kapapa Island, windward Oahu, are 1.4-2.8 (+ or – 0.25) m above present mean sea level (msl)…we interpret the deposit to be a fossil beach or shoreline representing a highstand of relative sea level during middle to late Holocene time. Calibrated radiocarbon dates of coral and mollusc samples, and a consideration of the effect of wave energy setup, indicate that paleo-msl was at least 1.6 (+ or – 0.45) m above present msl prior to 3889-3665 cal. yr B.P, possibly as early as 5532-5294 cal. yr B.P., and lasted until at least 2239-1940 cal. yr B.P
This study shows a sea level highstand ~1.6 meter above the present level from ~5500 years ago to 2000 years ago.
Late Quaternary highstand deposits of the southern Arabian Gulf: a record of sea-level and climate change
…..It has therefore been necessary to infer the ages of these sediments by a comparison of their stratigraphy and elevation with deposits known from other parts of the world. We regard this approach as valid because the southern Gulf coastline lacks evidence for significant widespread neotectonic uplift,…….
…..Widespread evidence exists for a Holocene sea level higher than at present in the southern Arabian Gulf, indicating that it peaked at 1–2 m above present level, c. 5.5 ka bp…….
This study shows a sea level highstand ~1 to 2 meters above the present level about ~5500 years ago.
The Quaternary Geological History of the Santa Catarina Southeastern Region (Brazil) 1999
The first part discusses drilling in several locations and analyzing samples. They mention dating prior to that was guesses. “…. A drilling campaign done in the domain permitted the sampling of material for 14C datings, and the obtained data confirmed some previously assumed ages. The sequence of events, that originated the Holocene deposits, has been also reconstructed through drilling and 14C dating of the collected peat and shell samples…”
In the body of the text is this:
THE HOLOCENE DEPOSITIONAL SYSTEM
Partially abutted against the Pleistocene barrier island/lagoonal system III, there is the Holocene depositional system. This unit is attributable to the Santos Transgression of Suguio & Martin (1978), along the State of São Paulo coastline, or to the Last Transgression of Bittencourt et al. (1979) along the State of Bahia coastline, being similar to the barrier island/lagoonal system IV of Villwock et al. (1986), along the State of Rio Grande do Sul coastline.
This system is related to the post-glacial transgressive episode whose culmination stage was attained about 5.1 ky BP, when a barrier island alignment was formed parallel to the shoreline, while drainage net was drowned. The subsequent regressive episode promoted the barrier island progradation following the lagoonal basin silting.
The paleoshorelines limited by ancient cliffs carved within Pleistocene terraces, presently representing the inner limit of the Holocene terrace, shows that this sea-level reached about 4m above the present one. Several terraces situated in different altitudes, and truncation of past morphological features nowadays observed on Holocene deposits, as well as along present lagoonal margins suggest that small scale sea-level oscillations occurred during the last 5 ky….
This study shows a sea level highstand ~ 4 meters above the present level about ~5000 years ago.With sea level oscillating since then. Not only has the sea levels have dropped since the Holocene Optimum the evidence shows that “warmer paleotemperatures were favourable for great proliferation of mollusks in the area”
Santa Catarina brazil is at latitude 27.2500°S.
Holocene sea-level change and ice-sheet history in the Vestfold Hills, East Antarctica
A new Holocene sea-level record from the Vestfold Hills, Antarctica, has been obtained by dating the lacustrine–marine and marine–lacustrine transitions that occur in sediment cores from lakes which were formerly connected to the sea. From an elevation of ∼7.5 m 8000 yr ago, relative sea-level rose to a maximum ∼9 m above present sea-level 6200 yr ago. Since then, sea-level has fallen monotonically until the present….
The above is a RELATIVE sea level. The area is not tectonically stable because the area has isostatic uplift in response to deglaciation from the Wisconsin Ice Age. The same applies to the following study.
A new Holocene relative sea level curve for the South Shetland Islands, Antarctica
The curve shows a mid-Holocene RSL highstand on Fildes Peninsula at 15.5 m above mean sea level between 8000 and 7000 cal a BP. Subsequently RSL gradually fell as a consequence of isostatic uplift in response to regional deglaciation….
VALIDATION BY ALTERNATE STUDIES
Ice free Arctic Ocean, an Early Holocene analogue
Extensive systems of wave generated beach ridges along the North Greenland coasts show that these areas once saw seasonally open water. In addition to beach ridges, large amounts of striated boulders in and on the marine sediments from the same period also indicate that the ocean was open enough for ice bergs to drift along the shore and drop their loads. Presently the North Greenland coastline is permanently beleaguered by pack ice, and ice bergs are very rare and locked up in the sea ice. Predictions of the rapidly decreasing sea ice in the Arctic Ocean generally point to this area as the last to become ice free in summer. We therefore suggest that the occurrence of wave generated shores and abundant ice berg dropped boulders indicate that the Arctic Ocean was nearly free of sea ice in the summer at the time when they were formed. The beach ridges occur as isostatically raised “staircases”, and C14-dated curves for relative sea level change show that they were formed in the Early Holocene. A large set of samples of molluscs from beach ridges and marine sediments were collected in the summer of 2007, and are presently being dated to give a precise dating of the ice free interval. Preliminary results indicate that it fell within the interval from c. 8.5 to c. 6 ka – being progressively shorter from south to north. We therefore conclude that for a period in the Early Holocene, probably for a millenium or more, the Arctic Ocean was free of sea ice at least for shorter periods in the summer….
Temperature and precipitation history of the Arctic
…. Solar energy reached a summer maximum (9% higher than at present) ~11 ka ago and has been decreasing since then, primarily in response to the precession of the equinoxes. The extra energy elevated early Holocene summer temperatures throughout the Arctic 1-3°C above 20th century averages, enough to completely melt many small glaciers throughout the Arctic, although the Greenland Ice Sheet was only slightly smaller than at present. Early Holocene summer sea ice limits were substantially smaller than their 20th century average, and the flow of Atlantic water into the Arctic Ocean was substantially greater. As summer solar energy decreased in the second half of the Holocene, glaciers re-established or advanced, sea ice expanded…
A new approach for reconstructing glacier variability based on lake sediments recording input from more than one glacier January 2012
…. A multi-proxy numerical analysis demonstrates that it is possible to distinguish a glacier component in the ~ 8000-yr-long record, based on distinct changes in grain size, geochemistry, and magnetic composition…. This signal is …independently tested through a mineral magnetic provenance analysis of catchment samples. Minimum glacier input is indicated between 6700–5700 cal yr BP, probably reflecting a situation when most glaciers in the catchment had melted away, whereas the highest glacier activity [growth] is observed around 600 and 200 cal yr BP. During the local Neoglacial interval (~ 4200 cal yr BP until present), five individual periods of significantly reduced glacier extent are identified at ~ 3400, 3000–2700, 2100–2000, 1700–1500, and ~ 900 cal yr BP….
A THIRD METHOD OF VALIDATION
Sea Level Changes Past Records and Future Expectations
For the last 40-50 years strong observational facts indicate virtually stable sea level conditions. The Earth’s rate of rotation records an [average] acceleration from 1972 to 2012, contradicting all claims of a rapid global sea level rise, and instead suggests stable, to slightly falling, sea levels.
Dig, and you find every single talking point of the ClimAstrologists is based on very questionable ‘Adjustments’
It is our attitude toward free thought and free expression that will determine our fate. There must be no limit on the range of temperate discussion, no limits on thought. No subject must be taboo. No censor must preside at our assemblies.
–William O. Douglas, U.S. Supreme Court Justice, 1952
–William O. Douglas, U.S. Supreme Court Justice, 1952