Return to Little Harbor, Santa Catalina Island, California: A Critique of the Marine Paleotemperature Model

1995 ◽  
Vol 60 (2) ◽  
pp. 287-308 ◽  
Author(s):  
L. Mark Raab ◽  
Katherine Bradford ◽  
Judith F. Porcasi ◽  
William J. Howard
Keyword(s):  
Sea Surface ◽  
Channel Islands ◽  
Short Term ◽  
Sea Temperature ◽  
Weak Evidence ◽  
Northern Channel Islands ◽  
Recent Case Study ◽  
Santa Catalina Island ◽  
Starvation Conditions

Marine paleotemperature is a significant factor in the subsistence productivity of many coastal regions and may be an important factor in the evolution of maritime societies. A California paleotemperature model, spanning 8,000 calendar years, correlates periods of high sea surface temperatures with decreased marine subsistence productivity. A recent case study involving this model identified warming conditions between A.D. 1150 to 1300 as a major cause of subsistence distress for dwellers of the northern Channel Islands. These results are questionable, based on a comparison with data from other sites and periods of high sea temperature. Research at the Little Harbor site, one of the most extensively researched in the Channel Islands, shows that high sea temperature about 5,200 calendar years ago may have introduced warm-water faunas but not starvation conditions. Evidence from other sites occupied during subsequent warming cycles, including the event between A.D. 1150 to 1300, points to similar conclusions. Understanding the effects of long- and short-term ocean temperature cycles, a focus on only a small segment of the Holocene paleotemperature curve, and weak evidence that food abundance was affected by sea temperature are problems that must be overcome before the validity of the paleotemperature model can be accepted.

Identifying Specialized 19th Century Fishing Camps on California's Northern Channel Islands: Applying AMS Radiocarbon Dating to Historical Sites

Radiocarbon ◽  
2015 ◽  
Vol 57 (5) ◽  
pp. 909-916 ◽  
Author(s):  
Todd J Braje ◽  
Torben C Rick
Keyword(s):  
Native Americans ◽  
Material Culture ◽  
19Th Century ◽  
Radiocarbon Dating ◽  
Channel Islands ◽  
Ams Radiocarbon Dating ◽  
Northern Channel Islands ◽  
Historical Sites ◽  
Site Types

California's Northern Channel Islands have long been an epicenter of specialized fishing economies dating from 13,000 yr ago to the mid-19th century. With thousands of well-preserved shell middens, some dominated by single shellfish species and little to no material culture, it can be difficult to distinguish between specialized prehistoric and historical deposits at some site types. Beginning at least in the Early Holocene and continuing into the Historic period, California mussels, turban snails, and abalone were targeted for specialized collection and processing by Native Americans and later Chinese and Euro-American fishers. Here, we demonstrate how selective accelerator mass spectrometry (AMS) radiocarbon dating of specialized abalone processing camps can help distinguish between prehistoric and historical sites. While unconventional, our case study demonstrates the utility of14C dating at sites less than 300 yr old.

scholarly journals THE APPLICATION OF CYCLOSTRATIGRAPHY AND ASTROCHRONOLOGY IN THE NEOGENE MARINE DEPOSITS OF EASTERN MEDITERRANEAN: METOCHIA SECTION (GAVDOS ISLAND)

2006 ◽  
Vol 39 (1) ◽  
pp. 17
Author(s):  
A. Antonarakou ◽  
H. Drinia ◽  
F. Pomoni-Papaioannou
Keyword(s):  
Eastern Mediterranean ◽  
Climatic Changes ◽  
Sea Surface ◽  
Time Interval ◽  
Short Term ◽  
Solar Insolation ◽  
Marine Deposits ◽  
Long Term Trend

Significant lithostratigraphical and micropaleontological signatures, of Milankovitchscale climatic changes are recorded in Miocene deep-sea sediments. As a case study, the Metochia Section, in Gavdos Island, which covers the time interval from 9.7 to 6.6 Ma, is used. This study emphasizes the sedimentological and micropaleontological characteristics of the section, attributed to Milankovitch-scale climatic changes. The short-term variations in climate and faunal composition are related to precession- controlled sedimentary cycles and the long-term trend in climate is related to eccentricity and obliquity cycles. Regional changes in sea surface temperature in combination with variations of solar insolation have caused the cyclical astronomical controlled pattern of Globorotalia species.

Emplacing Berlin: Digital Itineraries and Short-term Study Abroad in the City

2018 ◽  
Vol 12 (1) ◽  
pp. 26-36 ◽  
Author(s):  
Richard B. Apgar
Keyword(s):  
Study Abroad ◽  
Urban Landscape ◽  
Physical Space ◽  
Short Term ◽  
Study Abroad Programs ◽  
Term Study ◽  
Digital Maps ◽  
Short Term Study ◽  
The City

As destination of choice for many short-term study abroad programs, Berlin offers students of German language, culture and history a number of sites richly layered with significance. The complexities of these sites and the competing narratives that surround them are difficult for students to grasp in a condensed period of time. Using approaches from the spatial humanities, this article offers a case study for enhancing student learning through the creation of digital maps and itineraries in a campus-based course for subsequent use during a three-week program in Berlin. In particular, the concept of deep mapping is discussed as a means of augmenting understanding of the city and its history from a narrative across time to a narrative across the physical space of the city. As itineraries, these course-based projects were replicated on site. In moving from the digital environment to the urban landscape, this article concludes by noting meanings uncovered and narratives formed as we moved through the physical space of the city.

A recent case study in system identification

1991 ◽  
Author(s):  
T. HASSELMAN ◽  
J. CHROSTOWSKI
Keyword(s):  
System Identification ◽  
Recent Case ◽  
Recent Case Study

Breaking the Shackles of Gender Stereotyping to Create New Norms: The Case of Zimbabwean Migrant Women in Mthatha Town

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Sanction Madambi
Keyword(s):  
South Africa ◽  
Gender Stereotyping ◽  
Personal Agency ◽  
Migrant Women ◽  
Host Countries ◽  
Qualitative Research Design ◽  
Norms And Values ◽  
Recent Case Study ◽  
Traditional Approaches

The migration of Zimbabweans into South Africa is shaped by several factors and processes. Traditionally, the decision to migrate was mostly based on family considerations (where gender stereotypic roles were a priority), although in some cases the migrants exercised individualism and personal agency. This led to migration trends that were male dominated. Current Zimbabwean migration trends reflect large volumes of women as the socio-economic crisis forces them to leave their country. These migrant women encounter a myriad of challenges in their host countries. This paper explores Zimbabwean women’s migration to the town of Mthatha in South Africa, highlighting their challenges and the strategies they employ to overcome these, as found in a recent case study. Applying a qualitative research design and using questionnaires and interviews to gather data from the 100 purposively sampled women, the study found that many Zimbabwean migrant women in Mthatha encountered numerous challenges. They lacked the required documents to live and work in South Africa, experienced exploitation and marriage constraints, and had broken ties with their families back in Zimbabwe. According to the study, these women managed to navigate these challenges, rising above the stereotypic norms and values that used to label them as non-productive citizens to superheroes who were supporting their families and the country’s economy—thus breaking the shackles of gender stereotyping to create new norms. These findings underline the importance of shifting from the traditional approaches to women migration and pursuing perspectives that present migration as a critical component of the process of social change and development to all migrants.

Korean Mass Short-Term Mission: Case Study And Analysis Of Jerusalem Peach March 2004

2007 ◽  
Author(s):  
Sung Han P. LEE
Keyword(s):  
Short Term

The impact of Airbnb on a non-touristic city. A Case study of short-term rentals in Santa Cruz de Tenerife (Spain)

Erdkunde ◽  
2020 ◽  
Vol 74 (3) ◽  
pp. 191-204
Author(s):  
Marcus Hübscher ◽  
Juana Schulze ◽  
Felix zur Lage ◽  
Johannes Ringel
Keyword(s):  
Santa Cruz ◽  
Short Term ◽  
Rental Market ◽  
Rural Space ◽  
Use Of Data ◽  
Web Scraping ◽  
Per Capita ◽  
Per Se ◽  
The Impact

Short-term rentals such as Airbnb have become a persistent element of today’s urbanism around the globe. The impacts are manifold and differ depending on the context. In cities with a traditionally smaller accommodation market, the impacts might be particularly strong, as Airbnb contributes to ongoing touristification processes. Despite that, small and medium-sized cities have not been in the centre of research so far. This paper focuses on Santa Cruz de Tenerife as a medium-sized Spanish city. Although embedded in the touristic region of the Canary Islands, Santa Cruz is not a tourist city per se but still relies on touristification strategies. This paper aims to expand the knowledge of Airbnb’s spatial patterns in this type of city. The use of data collected from web scraping and geographic information systems (GIS) demonstrates that Airbnb has opened up new tourism markets outside of the centrally established tourist accommodations. It also shows that the price gap between Airbnb and the housing rental market is broadest in neighbourhoods that had not experienced tourism before Airbnb entered the market. In the centre the highest prices and the smallest units are identified, but two peripheral quarters stand out. Anaga Mountains, a natural and rural space, has the highest numbers of Airbnb listings per capita. Suroeste, a suburban quarter, shows the highest growth rates on the rental market, which implies a linkage between Airbnb and suburbanization processes.

A Case Study on the short-term Chinese Learning Course Based on Tandem

2018 ◽  
Vol 84 ◽  
pp. 103-128
Author(s):  
Yun‑chul Jung
Keyword(s):  
Short Term ◽  
Chinese Learning

EXAMINING PALEODRAINAGE EVOLUTION SINCE THE LAST GLACIAL MAXIMUM, NORTHERN CHANNEL ISLANDS, CALIFORNIA, USA

2018 ◽  
Author(s):  
Howasta S. Tahiry ◽  
◽  
Jillian M. Maloney ◽  
Shannon A. Klotsko ◽  
Amy E. Gusick ◽  
...  
Keyword(s):  
Last Glacial Maximum ◽  
Glacial Maximum ◽  
Channel Islands ◽  
Last Glacial ◽  
Northern Channel Islands ◽  
The Last Glacial Maximum ◽  
The Last Glacial

scholarly journals Price adjustments on the Johannesburg Stock Exchange for unexpected and dramatic news events: An empirical analysis

1989 ◽  
Vol 20 (3) ◽  
pp. 119-128 ◽  
Author(s):  
N. Bhana
Keyword(s):  
Empirical Analysis ◽  
Stock Exchange ◽  
Abnormal Returns ◽  
Short Term ◽  
Johannesburg Stock Exchange ◽  
Price Adjustments ◽  
Weak Evidence ◽  
News Events ◽  
One Year

The objective of this study is to determine whether companies listed on the Johannesburg Stock Exchange overreacted to unexpected favourable and unfavourable company-specific news events during the period 1970 - 1984. The JSE appears to be inefficient in reacting to the announcement of unfavourable news; economically significant abnormal returns up to one year following the event are observed. The JSE does not appear to overreact to news of a favourable nature, there is only weak evidence of short-term overreaction. The selling pressure caused by panic selling could depress prices well below levels justified by the unfavourable news. The magnitude of the overreaction to unfavourable news is sufficient to enable astute investors to outperform the market by taking positions in these securities. Knowledge of the pattern of market overreaction can also be of value to investors for transactions that are to take place anyway.

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