{'fraction_non_alphanumeric': 0.027851458885941646, 'fraction_numerical': 0.01989389920424403, 'mean_word_length': 4.507299270072993, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 1, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Development of the Holocene foredune plain in the Narva-Jõesuu area, eastern Gulf of Finland

Morphogenesis and inner structure of the Holocene foredune plain in the Narva -Joesuu area, eastern Gulf of Finland were studied using the optically stimulated luminescence dating, ground penetrating radar study and interpretation of airborne LIDAR elevation data . The results show that the Narva-Joesuu foredune plain consists of c. 100 parallel coastal foredune ridges built of well - sorted fine sand underlain by gently (~7o) sea ward-dipping sandy beach deposits. The distal part of the plain which consists of at least 15 ridges, was formed during the regressive phase of the Ancylus Lake/early Litorina Sea , serving as a barrier for the lagoon behind it. A larger portion of ridges, with an average progradation rate 0.26 m a –1 , was formed in the conditions of falling relative sea level during the Litorina regression and has been separated from the older foredune succession by a hiatus related to the Litorina transgression at 8.5-7.3 cal. ka BP. In the highest central part of the plain the foredune growth was interrupted by foredune instability and a re-blowing episode dated to 5.4±0.9 ka BP which may correlate with a larger regional cooling at 5.8-5.1 cal. ka BP in the North Atlantic and central Europe . During the last 3000 years, the foredune progradation rate decreased to 0.17 m a –1 , most probably because of decelerated land-uplift and increased human impact due to coastal protection.