Publication Date:
2024-06-12
Description:
The Azores archipelago is a group of nine oceanic volcanic islands located in the mid-North Atlantic, roughly 1500 km from Europe and 1900 km from America. Lake Azul located in São Miguel island has a surface area of 4.35 km, 28m of maximum depth and is located at 259m above sea level. A coring campaign was conducted in September 2011 using a 60mm diameter UWITEC gravity corer from UWITEC floating platform retrieving a Core AZ11_02 (1.70 m long) located in the deep basin of the lake (27m depth). The core was dated using ¹⁴C and produced a multi-proxy dataset of geochemical and biological analyses that we used to uncover paleoenvironmental changes on Lake Azul in the last 660 years.
Keywords:
Accumulation rate, 5alpha-stigmastan-3beta-ol; Accumulation rate, 5beta-cholestan-3beta-ol; Aerophilous diatoms; Age; AGE; Azores Archipelago; Azul11; Carbon, organic, total; Carbon, organic, total/Nitrogen, total ratio; Carbon dioxide, partial pressure, blood, standard error; Chironomid analysis (Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology); Chironomini; deep lake; Development of a CCAMLR Marine Protected Area in the Antarctic Weddell Sea; Diatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.); Diatoms, benthic; Diatoms, planktic; Gas chromatography - Mass spectrometry (GC-MS); GCUWI; Gravity corer, UWITEC; Lake Azul, Azores; Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS; multiproxy; Nitrogen, total; oceanic island; Orthocladiinae; Tanypodinae; Tanytarsini; WSMPA; δ13C; δ15N
Type:
Dataset
Format:
text/tab-separated-values, 1471 data points
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