The Library is on Fire,Now What? Assessing the Damage and How to Approach It: A Case Study from the Chesapeake Bay

ABSTRACT

The Longwood Institute of Archaeology conducted the Vulnerability, Potential and Condition (VPC) assessment of shoreline archaeological sites along 1990 km (1237 miles) of the Chesapeake Bay in Virginia. VPC assessment involves a three-pronged approach that includes (1) the assessment of site vulnerability due to changing shorelines using an analytical package called Analysing Moving Boundaries Using R – AMBUR, (2) the assessment of potential shoreline site locations through predictive modelling using Weights of Evidence – WofE – analysis, and (3) the assessment of current conditions of known sites through direct observation. Vulnerability assessment results indicated that 49% of site shorelines in the project area are moving landward. Potential assessment located high-probability site locations with an 83% efficiency. Condition assessment, conducted using standard field protocols, provided feedback of the sites’ current conditions. The intended outcome of this method is to provide resource managers with information needed to make informed, data-driven management decisions.     

Late Weichselian deglaciation and sea level history of St Jonsfjorden,Spitsbergen: A contribution to ice sheet reconstruction

The elevation and age of surveyed shorelines in St Jonsfjorden, western Spitsbergen, provide a chronology for Late Weichselian deglaciation and a proxy for former ice thickness. Support is provided for previous reports of two sets of shorelines on NW Spitsbergen, the oldest (at 60 m in St Jonsfjorden) dating to a pre‐late Weichselian glaciation and the youngest documenting postglacial rebound. The remarkable survival of the older shorelines suggests that a large area of NW Spitsbergen was either covered by protective, cold‐based ice or was subject to only local glaciation during the late Weichselian even though glacier ice extended to the shelf edge in the Isfjorden Trough. A marine limit of 46 m at the mouth of St Jonsfjorden is compatible with the regional late Weichselian marine limit (LWML) dated to ～13 ka BP. A partial relative sea level curve and equidistant shoreline diagram are produced for St Jonsfjorden and used in conjunction with relative sea level curves based on data from previous studies to produce an isobase map for 9 ka BP. The curves indicate that western sites were subject to initial slow emergence followed by rapid emergence between 10 ka and 8.2 ka BP, trends characteristic of areas affected by a full glacial sea or at least subject to early break up of a thin or discontinuous glacier ice cover. A step in the 9 ka BP shoreline long profile over the western end of the peninsula separating Isfjorden and van Mijenfjorden suggests that Holocene neotectonics may have produced anomalously high rebound rates in that area.     

Refining Broad-Scale Vulnerability Assessment of Coastal Archaeological Resources,Lough Foyle,Northern Ireland

Increasing evidence indicates that ongoing and future climate change impacts, such as enhanced coastal erosion driven by intensified storms and sea-level rise, will be destructive or problematic for coastal archaeological heritage. Approaches to this problem range from broad-scale GIS-based vulnerability assessments to site-scale monitoring and survey. In all cases, the approach chosen should be based on the best-available data on the local historic environment and pattern of coastal change. Therefore, this paper will demonstrate how such data can be successively acquired and enhanced using an integrated approach that builds on and refines a previously conducted broad-scale vulnerability assessment. This approach was adopted in the study region (Northern Ireland) owing to a lack of coherent and up-to-date information on shoreline change. This approach incorporated the GIS-based Digital Shoreline Analysis System (DSAS) to quantify and analyze local shoreline change. DSAS is a software extension for ESRI ArcGIS which allows calculation of rate-of-change statistics using past shorelines identified from georeferenced historic maps and vertical aerial imagery. Additionally, a field survey was conducted to assess the condition of recorded sites, and identify unrecorded ones. Results revealed a more complex pattern of shoreline change in the study area (Magilligan Foreland, Lough Foyle) than previously anticipated, with zones of significant erosion interspersed with areas of stability or advance. Fifty-one new sites ranging from the prehistoric period to the Second World War were also identified. The new information was used to develop a priority classification based on site significance, condition and risk level which improved significantly on the uniform classification of the original broad-scale assessment.     

Marine resource intensification in Viking Age Europe: the molluscan evidence from Quoygrew,Orkney

This paper addresses whether molluscan evidence from Orkney can shed light on the hypothesis that there was a trend towards the intensification of marine resource use at the end of the first millennium AD. The stratified middens of Quoygrew, which date from approximately the 10th to the 13th centuries, are shown to contain predominantly limpets, which may have been used for baiting fish. From metrical data it is shown that these limpets reduce in size through time. In order to test whether this observation is related to intensification in exploitation, analysis of limpet shoreline location was carried out. In addition, age data were used to demonstrate a lowering of average age which suggests intensification in gathering rather than environmental influences, particularly during the 11th–12th centuries at this site.     

PARTICLE SIZE AND PHOSPHATE ANALYSIS-EVIDENCE FOR THE EVOLUTION OF A TELL

Soil samples were collected from a deep sounding through the centre of a tell, 11 m in height, at Sitagroi in north-eastern Greece. These samples were analysed for particle size and total phosphate in order to elucidate the formation of the tell. The phosphate results, though very varied, indicated that the tell evolved entirely as a result of occupation of the site. It is proposed that the main process of accumulation was from house collapse and that local alluvium was used for house construction. A similarity is shown between local alluvium, a remnant of a house wall and most of the samples from the deep sounding. Pearson type 1 curves are fitted to the particle size data and this permits a grouping of soil samples. Some of the divisions between the groups coincide not only with occupation phase changes but also with localized lower phosphate contents. Two periods of site abandonment are suggested.     

The site of Al-Qurainiyah: Topography and phases of an early Islamic coastal settlement on Failaka Island

This paper presents the latest finds from the early Islamic site of Al-Qurainiyah on Failaka Island, Kuwait. Trenches opened to the west of the main late Islamic village led to the identification of residential buildings and a workshop located along the shoreline, while the pottery assemblage suggests a permanent occupation from at least the seventh century CE to the early ninth century CE. The last two years of excavations allowed us to uncover archaeological contexts that seem to indicate a previous occupation, dating to the late Hellenistic period (second century BC). The long-term occupation, strategic position of the settlement facing a wide and well-sheltered lagoon, as well as the installation of a stable settlement in the same period of Al-Qusur—the main early Islamic site of the island—seem to suggest the interpretation of Al-Qurainiyah as a landing place used both in the early Islamic period and beforehand.     

Holocene Relative Sea-Level Change on the Isle of Skye,Inner Hebrides,Scotland

Holocene relative sea-level (RSL) changes are described for the Isle of Skye, based upon evidence from isolation basins and back barrier environments. RSL rose across low-lying coastal areas in the early Holocene, inundating isolation basins in the Sleat peninsula, and then fell back in the early-middle Holocene before a fluctuating rise occurred later in the middle and late Holocene. A short-lived marine inundation at one site may have been caused by an episode of rapid RSL rise after the discharge of Lakes Agassiz–Ojibway in North America and/or the Holocene Storegga Slide tsunami, generated by submarine landsliding off South-West Norway. The empirical evidence for RSL change on Skye is compared with a recent shoreline-based glacio-isostatic adjustment model, which includes Skye, showing altitudes for the Holocene Storegga Slide tsunami, Main Postglacial, Blairdrummond and Wigtown shorelines in the area. The empirical evidence is shown to be in accord with the altitudes predicted by the model.     

Testing heterogeneity in faunal assemblages from archaeological sites. Tumbling and trampling experiments at the early-Middle Pleistocene site of Gesher Benot Ya’aqov (Israel)

The current paper reports an experimental case study to test the heterogeneity of faunal assemblages from the Early-Middle Pleistocene Layers V-5 and V-6 of the Gesher Benot Ya’aqov Acheulian site (Israel). Tumbling and trampling experiments were initiated to gain qualitative insight into processes of bone modification and to assess the timing of the biostratonomic chronology, as it was assumed that both mechanisms were responsible for the formation of striations documented on the bone surfaces from the site. The tumbling experiments mimicked sediment movement in a calm lacustrine shoreline environment whereas the trampling experiments investigate the role of animal/hominin activities in dry, muddy and wet environments. Models for the internal operational sequence of an abrasional process due to uni- and multidirectional water movement and of a trampling scenario are presented. These models are used for the interpretation of the fauna from Gesher Benot Ya’aqov.     

Two tests of the prehistoric cultural chronology of Varanger,North Norway

The Younger Stone Age of the Varanger fjord area is tested by means of the altitudinal relationship between archaeological sites and shorelines, and by C‐14 dates on cultural material from North Norway and Finland. The test indicates that the sites from different cultural phases cluster differently in relation to different shorelines with the exception of the sites from phase III, which overlap considerably with sites from phases II and IV. Altogether the altitudinal overlapping suggest that there is greater temporal overlapping between different phases than hitherto believed. The C‐14 dates on cultural material suggest that the temporal periods corresponding with these phases cover different time spans and are approximately 1000 C‐14 years older than previously estimated.     

Soil phosphate analysis as a tool in archaeology

The theory underlying the use of soil phosphate analysis in archaeology is discussed. After describing the field and laboratory methods used at Stavanger Museum, the method is illustrated by several examples. In all cases the results showed good agreement with the archaeological evidence, and generally provided useful supplementary information. The method may be used as a guide to the functions carried out in different parts of a site and to the intensity of occupation. Although no hidden sites were found in a reconnaissance survey, the results indicate that the method has considerable scope in locating sites in areas destined for town development, etc.     

Keeping Pace With Rising Sea: The First 6 Years of the Lower Suwannee Archaeological Survey,Gulf Coastal Florida

Low-gradient coastlines are susceptible to inundation by rising water, but they also promote marsh aggradation that has the potential to keep pace with sea-level rise. Synergies among hydrodynamics, coastal geomorphology, and marsh ecology preclude a simple linear relationship between higher water and shoreline transgression. As an archive of human use of low-gradient coastlines, archaeological data introduce additional mitigating factors, such as landscape alteration, resource extraction, and the cultural value of place. The Lower Suwannee Archaeological Survey (LSAS) is an ongoing effort to document the history of coastal dwelling since the mid-Holocene, when the rate and magnitude of sea-level rise diminished and the northern Gulf coast of Florida transitioned into an aggradational regime. Results of the first 6 years of the LSAS suggest that multicentury periods of relative stability were punctuated by site abandonment and relocation. Subsistence economies involving the exploitation of oyster and fish, however, were largely unaffected as communities redistributed themselves with changes in shoreline position and estuarine ecology. After AD 200, civic-ceremonial centers were established at several locations along the northern Gulf coast, fixing in place not only the infrastructure of daily living (villages), but also that of religious practice, notably cemeteries and ceremonial mounds. Intensified use of coastal resources at this time can be traced to a ritual economy involving large gatherings of people, terraforming, feasting, and the circulation of socially valued goods. To the extent that religious practices buffered the risks of coastal living, large civic-ceremonial centers, like aggrading marshes, afforded opportunities to “outpace” sea-level rise. On the other hand, centers introduced a permanence to coastal land-use that proved unsustainable in the long term.     

Maritime Aspects of Medieval Siraf,Iran: a pilot project for the investigation of coastal and underwater archaeological remains

Siraf is well‐known archaeologically and historically as an ancient port in the Persian Gulf that prospered during the medieval period. Siraf played a leading role in facilitating maritime and terrestrial trade, connecting long‐distance Indian Ocean and China routes with those in the Gulf region. Despite its history, no previous research has been dedicated to the maritime infrastructure of Siraf. Through the ‘2012 Siraf pilot project’ a preliminary survey of the underwater and shoreline remains of this ancient port city was conducted. The site's location is unique in many respects to trade routes and logistical considerations; however, its maritime infrastructure is difficult to assess in light of the extensive threats to the site.     

Heritage Monitoring Scouts: Engaging the Public to Monitor Sites at Risk Across Florida

ABSTRACT

Along Florida’s nearly 13,000 km of shoreline, nearly 4000 archaeological sites and over 600 recorded historic cemeteries are at risk from climate change impacts including coastal erosion and a 2-metre rise in sea level. In 2016, the Florida Public Archaeology Network (FPAN) created the Heritage Monitoring Scouts (HMS Florida) programme to engage the public in monitoring sites at risk. The programme grew quickly during the first year of operation to include 233 volunteers who submitted 312 monitoring forms. The programme exists beyond the singular act of a volunteer reporting site conditions; across Florida, varied combinations of local partnerships present unique opportunities for programmes, for example, the pilot program at the Guana Tolomato Matanzas National Estuarine Research Reserve. Preliminary outcomes from the first year of HMS Florida and the pilot indicate the programme is effective in public engagement and a powerful management tool for tracking change to sites over time.     

Terminal Pleistocene–Early Holocene lithic technological organization around Lake Mojave,California

Abstract

The surface lithic scatters at two areas around Soda Lake were intensively surveyed and 3133 artifacts were analyzed in the field using four main variables to infer how Terminal Pleistocene–Early Holocene foragers organized lithic technology around pluvial Lake Mojave, California. Results indicate that early stage bifaces and flake tool blanks were created at a fine-grained volcanic (felsite) quarry/workshop complex in the Soda Mountains survey area and transported elsewhere. In addition, fine-grained volcanic bifaces were reduced and bifaces and flake tools of cryptocrystalline silicates and obsidian were finished, used, and/or discarded at a habitation area on the ancient shorelines near Little Cowhole Mountain. Comparisons with nearby sites of similar ages (at Ft. Irwin and China Lake) reveal many similarities in lithic technological organization. Lake Mojave—an important locus of prior research—can now be integrated into recent Mojave Desert and Great Basin technological organization studies.     

The Caesarea Ancient Harbor Excavation Project (C.A.H.E.P.): Preliminary Report on the 1980–1983 Seasons

Abstract

Underwater and shoreline survey and excavation at the Herodian harbor of Sebastos, the port of Caesarea Maritima on the Mediterranean coast of Israel, have provided important new information on Roman harbor design and construction. Local and imported materials were carefully selected and used to construct two immense breakwaters that framed outer and inner basins. Hydraulic concrete was used in a sophisticated manner, and ingenious sluice gates and a subsidiary breakwater provided protection against siltation and storm damage.     

Erosion Hazards and Efficient Preservation Measures in Prehistoric Cultural Layers in the Littoral of Lake Constance (Germany,Switzerland)

Many Neolithic and Bronze Age cultural layers and pile fields embedded in sediments at the shorelines of pre-alpine lakes in France, Switzerland, Germany, Austria, and Italy (in part UNESCO World Heritage Sites), are threatened by littoral erosion which is partly caused by human agency. Based on measurements of the wave field at four prehistoric sites on Lake Constance (Germany, Switzerland) we discuss the role of passenger ship navigation. We also review the stability and ecological compatibility of archaeological preservation control fills on the littoral platform of Lake Constance, and we make some recommendations for future preservation measures.     

Soil Chemical Analysis Applied as an Interpretive Tool for Ancient Human Activities in Piedras Negras,Guatemala

The applicability of soil chemical analysis to the interpretation of ancient human activity areas in the Maya region was studied for potential implications in anthropogenically modified soils. We studied chemical signatures associated with a horizontally excavated site in Piedras Negras, Guatemala. The focus of this study is on soil phosphate and trace metals as indicators of ancient activity. We compared total phosphate with Mehlich extractable phosphate to see which method was superior. We also compared total (nitric-perchloric) digestion with the DTPA extraction procedure of heavy metal determination to resolve which method most accurately indicates ancient activity areas. We used principal component analysis to compare the metals and give probable locations of ancient activities. Statistical analysis of chemical patterns indicated possible areas of food preparation and craft production as well as sweeping patterns. We found that elevated phosphate, barium and manganese levels indicate areas of organic refuse disposal. Mercury and lead concentrations indicate areas of craft production. These observations are compared with the artifact data. We were also able to determine areas associated with similar activities using chemical analysis. The comparison of the total and extractable element analysis demonstrated that both methods yield important information regarding activity areas. However, because of the resolution obtained, convenience, economy, and safety, we suggest the extractable DTPA and Mehlich methods.     

Geo-archeological interpretation of Acheulian calc-pan sites at Doornlaagte and Rooidam (Kimberley,South Africa)

Two Acheulian occupation sites of the Kimberley District, Doornlaagte and Rooidam, are found geologically sealed and in semi-primary context within complex sequences of calcareous and arenaceous sediments. The sedimentary columns are analyzed and interpreted in terms of sedimentology and stratigraphy, indicating major occupation along the margins of shallow, seasonal lakes; sporadic visits to the fluctuating shoreline are also indicated thereafter, until the Doornlaagte playa began to dry out, and at Rooidam until the whole depression was submerged. The evolution of the related calcareous pans is discussed and attributed to cycles of alternating erosion (aeolian, chemical and fluvial) and deposition (lacustrine and colluvial, including reworked aeolian components). In addition to pedogenetic “calcretes,” most of the limestones of the pan sedimentary sequences are lacustrine in origin. Palaeosols also include fersiallitic soils. The various geomorphologic events indicate repeated and appreciable environmental changes during the mid-Pleistocene. The detailed climatic oscillations recorded at Doornlaagte and Rooidam cannot be correlated, and the latter site is appreciably younger, with a provisional $\text{Th}\text{U}$ date of 115,000 BP for the late Acheulian (“Fauresmith”) occupation.     

Impacts of River Regulation on the Terminal Lakes and Mouth of the River Murray,South Australia

The River Murray is a highly regulated, low gradient stream. Prior to barrage construction near the Murray Mouth saline water was present sporadically far upstream. Barrage completion by 1940 has had geo-morphic and ecological impacts. Estuarine Lakes Albert and Alexandrina became permanent freshwater bodies with elevated water levels. Exposed lake margins have eroded by up to 10 m yr', whereas along sheltered shorelines, sedimentation has accompanied reed growth. Upstream weirs have inhibited coarse sediment from reaching the lakes. In the Goolwa Channel, sedimentation changed from bioclas-tic sands to muds, accumulating at up to 4.5 mm yr' over the past 50 years. Regulation has also transformed a migrating flood tidal delta at the Murray Mouth into a permanently vegetated island.     

Coastal resident perceptions of nature-based adaptation options in Nova Scotia

Climate change risks to coastal communities may overwhelm current management strategies. The emergence of nature-based solutions could provide alternative approaches for climate adaptation; however, studies on their public acceptability are limited. This research focuses on the human dimensions of nature-based coastal adaptation solutions. The research sought to understand the kind of environmental changes participants were experiencing in their coastal communities of Nova Scotia and what management responses they observed being taken, if any. Online focus groups were held with coastal property owners in Nova Scotia to understand how they assess coastal risks and four approaches to nature-based coastal adaptation: living shorelines, accommodation, retreat, and dyke realignment to make space for wetland restoration. Results revealed ongoing trust in traditional hard-line approaches, but also interest in knowing more about nature-based options. There was general support for living shorelines, albeit with scepticism; a concern that accommodation is just a “band-aid” approach; resistance to retreat, despite general recognition of its future utility; and a lack of understanding of dyke realignment. The successful implementation of nature-based coastal adaptation approaches will require more evidence of their viability, better options for financing them, and engagement with communities around the best-fit alternatives for them.