The impact of Sochi – Imeretinsky harbor on the coastal processes (the Black sea)

The impact of the harbor built near the Mzymta river mouth on the pebble sediment transport along the coast and the coastal line transformation is assessed proceeding from the survey data comparison. Sediment accumulation in the wave chamber of the permeable southwestern barrier pier are considered and the possibility of its circumvention by pebble material is estimated. It is shown that the sediments transported along the pier penetrate into the numerous canyon openings and go deeper. As a result of the bottom erosion behind the port, the pebble beach in front of the shore-protective structure protecting the embankment from the waves has disappeared at the 1-km-long coast site, and its erosion continues. The absence of a wave-setting pebble beach poses a threat to the destruction of the coastal protection structure and the embankment.

The Invention of Taxation in the Inka Empire

Several khipus—Inka knotted-string recording devices—were recently excavated at a storage facility at the Peruvian south coast site of Inkawasi, found buried under agricultural produce (i.e., chili peppers, peanuts, and black beans). These khipus contain a formulaic arrangement of numerical values not encountered on khipus from elsewhere in Tawantinsuyu (the Inka Empire). The formula includes first, a large number, hypothesized to record the sum total of produce included in a deposit, followed by a “fixed number,” and then one or more additional numbers. The fixed number plus the additional number(s) sum to the original large number. It is hypothesized that the fixed number represents an amount deducted from the deposit to support storage facility personnel. As such, it represented a tax assessed on deposits, the first evidence we have for a system of taxation on goods in the Inka Empire. It is proposed that the size and complexity of the storage facility at Inkawasi prompted the “invention” of a kind of financing instrument—taxation—not known previously from Inka administration. We also consider, but provisionally set aside, the alternative hypothesis that the fixed values recorded on the Inkawasi khipus could have represented amounts of seeds set aside from deposits for the next year's planting.

The Color of Influence: A Provenance Study of Hematite-Based Paints on Early Olmec Carved Pottery

Recent research and debates regarding the origin and spread of Olmec iconography during the Early Formative have centered on provenance and stylistic analyses of carved and incised pottery. Studies by instrumental neutron activation analysis (INAA) have indicated that Gulf Coast-style carved-incised pots were exported extensively from the area of the first Olmec capital, San Lorenzo, to several other regions of Mesoamerica. More recently, excavations at the Pacific Coast site of Cantón Corralito have shown that carved-incised pottery and other Olmec-style artifacts dominate strata contemporary with Early Olmec, suggesting the site may represent a settlement enclave of Gulf Olmec peoples. In this study we provide additional evidence of exchange between the Gulf Olmec and the Pacific Coast region by using laser ablation time-of-flight inductively coupled plasma mass spectrometry (LA-TOF-ICP-MS) to characterize hematite-based paints on Olmec-style pottery from Cantón Corralito, and to compare these paints to raw hematite recovered from Cantón Corralito and San Lorenzo. When examined in combination with sherd provenance data, the LA-TOF-ICP-MS data demonstrate that Olmec vessels were decorated in the San Lorenzo region before being exported to the Pacific Coast, and that Gulf Coast hematite was exported to Cantón Corralito, where it was used to enhance Olmec-style symbolism on locally produced vessels.

Opportunistic Whale Hunting on the Southern Northwest Coast: Ancient DNA, Artifact, and Ethnographic Evidence

Two modes of whale use have been documented on the Northwest Coast of North America, namely systematic whale hunting and whale scavenging. Ethnographically, systematic hunting was practiced only by Native groups of southwestern Vancouver Island and the northern Olympic Peninsula of Washington State. This hunting was undertaken with technology specifically designed for the task. Other groups on the Northwest Coast reportedly did not hunt whales but did utilize beached animals. Here we present archaeological evidence of whaling from the northern Oregon coast site of Par-Tee in the form of a bone point lodged in a whale phalange. This hunting likely occurred 1,300 to 1,600 years ago. Ancient DNA extracted from the phalange proves it to be a humpback whale (Megaptera novaeangliae). DNA recovered from the bone point indicates that it is made from elk (Cervus elaphus) bone, and the point's DNA sequence is identical to that from unmodified elk bone from Par-Tee, suggesting the whale was locally hunted. We present ethnohistoric data from the southern Northwest Coast describing opportunistic whale hunting with a variety of technologies. We argue that many groups along the west coast of North America likely occasionally hunted whales in the past and that this hunting occurred using nonspecialized technologies.

A Recent History of 14C, 137Cs, 210Pb, and 241Am Accumulation at Two Irish Peat Bog Sites: an East Versus West Coast Comparison

Data on radiocarbon (14C), 137Cs, 210Pb, and 241Am levels in an ombrotrophic peat sequence from a montane site on the east coast of Ireland are compared with data from a similar sequence at an Atlantic peatland site on the west coast. The 14C profiles from the west and east coasts show a broadly similar pattern. Levels increase from 100 pMC or less in the deepest horizons examined, to peak values at the west and east coast sites of 117 ± 0.6 pMC and 132 ± 0.7 pMC, respectively (corresponding to maximal fallout from nuclear weapons testing around 1964), thereafter diminishing to levels of 110–113 pMC near the surface. Significantly, peak levels at the east coast site are considerably higher than corresponding levels at the west coast site, though both are lower than reported peak values for continental regions. The possibility of significant 14C enrichment at the east coast site due to past discharges from nuclear installations in the UK seems unlikely. The 210Pbex inventory at the east coast site (6500 Bq m−2) is significantly higher than at the west coast (5300 Bq m−2) and is consistent with the difference in rainfall at the two sites. Finally, 137Cs and 241Am inventories at the east coast site also exceed those at the west coast site by similar proportions (east:west ratio of approximately 1:1.2).