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    Wyświetlanie 1-6 z 6
    Tytuł:
    Geomorphological development of the Memphite floodplain over the past 6,000 years
    Autorzy:
    Bunbury, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2027008.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Mem phis
    floodplain
    river mi gra tion
    delta head
    cli mate change
    Opis:
    The Memphite ruin mounds around the mod ern town of Mit Rahina in north ern Egypt form a part of a re gion around which the cap i tal of Egypt mi grated through time. Some of these mi gra tions were the re sponses to land scape changes and the area is one that is sub ject to a num ber of types of land scape change. The delta and river sys tems as well as the deserts that sur round Mem phis changed pro foundly as global tem per a tures rose at the end of the last ice age. This pa - per sum ma rises the main land scape pro cesses that af fected the area and pro poses a model for river mi gra tion and delta-head change in the Memphite floodplain.
    Źródło:
    Studia Quaternaria; 2013, 30; 61-67
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An 854-year tree-ring chronology of Scots pine for south-west Finland
    Autorzy:
    Helama, Samuli
    Holopainen, Jari
    Timonen, Mauri
    Mielikäinen, Kari
    Powiązania:
    https://bibliotekanauki.pl/articles/2027262.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dendrochronology
    North At lan tic Os cil la tion
    paleoclimate
    Pinus sylvestris
    subfossil wood
    Opis:
    A near-mil len nial tree-ring chro nol ogy (AD 1147–2000) is pre sented for south-west Fin land and an a lyzed us ing dendroclimatic meth ods. This is a com pos ite chro nol ogy com pris ing sam ples both from stand ing pine trees (Pinus sylvestris L.) and subfossil trunks as re cov ered from the lake sed i ments, with a to tal sam ple size of 189 tree-ring sample se ries. The se ries were dendrochronologically cross-dated to ex act cal en dar years to por tray vari abil ity in tree-ring widths on inter-an nual and lon ger scales. Al though the stud ied chro nol ogy cor re lates sta tis ti cally sig nif i cantly with other long tree-ring width chro nol o gies from Fin land over their com mon pe riod (AD 1520–1993), the south-west chro nol ogy did not ex hibit sim i larly strong mid-sum mer tem per a ture or spring/early-sum mer pre cip i ta tion sig nals in com par i son to pub lished chro nol o gies. On the other hand, the south-west chro nol ogy showed high est cor re la tions to the North At lan tic Os cil la tion in di ces in win ter/spring months, this as so ci a tion fol low ing a dendroclimatic fea ture com mon to pine chro nol o gies over the re gion and ad ja cent ar eas. Paleoclimatic com par i son showed that tree-rings had var ied sim i larly to cen tral Eu ro pean spring tem per a tures. It is pos tu lated that the col lected and dated tree-ring ma te rial could be stud ied for wood sur face reflectance (blue chan nel light in ten sity) and sta ble iso topes, which both have re - cently shown to cor re late notably well with sum mer tem per a tures.
    Źródło:
    Studia Quaternaria; 2014, 31; 61-68
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of DOI index to analysis of selected examples of resistivity imaging modelsin Quaternary sediments
    Autorzy:
    Glazer, Michał
    Mendecki, Maciej Jan
    Mycka, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2027367.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    depth of investiga tion index (DOI)
    electric resis tivity tomography (ERT)
    resis tivity model
    Opis:
    In ter pre ta tion of re sis tiv ity cross sec tions may be in many cases un re li able due to the pres ence of ar ti facts left by the in ver sion pro cess. One way to avoid er ro ne ous con clu sions about geo log i cal struc ture is cre ation of Depth of In ves tiga tion (DOI) in dex maps, which de scribe du ra bil ity of pre pared model with re spect to vari able pa ram e ters of in ver - sion. To as sess the use ful ness of this in ter pre ta tion meth od ol ogy in re sis tiv ity im ag ing method over qua ter nary sediments, it has been used to one syn thetic data set and three in ves ti ga tion sites. Two of the study ar eas were placed in the Up per Silesian In dus trial Dis trict re gion: Bytom–Karb, Chorzów–Chorzów Stary; and one in the South ern Pom er a - nian Lake Dis trict across Pi³awa River Val ley. Bas ing on the avail able geo log i cal in for ma tion the re sults show high util ity of DOI in dex in anal y sis of re ceived re sis tiv ity mod els, on which ar eas poorly con strained by data has been des - ig nated.
    Źródło:
    Studia Quaternaria; 2014, 31; 109-114
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non-pollen palynomorphs characteristic for the dystrophic stage of humic lakes in the Wigry National Park, NE Poland
    Autorzy:
    Fiłoc, Magdalena
    Kupryjanowicz, Mirosława
    Powiązania:
    https://bibliotekanauki.pl/articles/2025759.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    NPPs
    palaeo eco logi cal re con struc tion
    humic lake
    pol len anal y sis
    NE Po land
    Opis:
    The nu mer ous dystrophic (humic) lakes are a very im por tant fea ture of Wigry Na tional Park, NE Po land. As the most re cent palaeo eco logi cal data in di cate, at the be gin ning of its de vel op ment (in the Late Gla cial and Early and Mid dle Ho lo cene) these wa ter bod ies func tioned as har mo ni ous lakes, and their trans for ma tion into dystrophic lakes and the sta bi li za tion of the trophic state took place at the be gin ning of the Subboreal. Palynological anal y sis of sed i ments from two such lakes (Lake OElepe and Lake Suchar II), with spe cial em pha sis on non-pol len palynomorphs (NPPs), was aimed at a de tailed bi o log i cal char ac ter iza tion of dystrophic lakes dur ing their long-last ing ex is tence. The ob tained re - sults al lowed for the des ig na tion of or gan isms char ac ter is tic for dystrophic lakes, of which rep re sen ta tives ap peared with the de creas ing pH of the wa ter and the for ma tion of Sphag num peat around lakes. These or gan isms were di vided into four groups: al gae, fungi, tes tate amoe bas, and an i mals. Their rep re sen ta tives ap pear in var i ous de vel op men tal stages of dystrophic lakes.
    Źródło:
    Studia Quaternaria; 2015, 32; 31-41
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Holocene changes in vegetation of the Mrągowo Lakeland (NE Poland) as registered in the pollen record from Lake Salęt
    Autorzy:
    Szal, Marta
    Kupryjanowicz, Mirosława
    Wyczółkowski, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2027099.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    veg e ta tion trans for ma tions
    Late Ho lo cene
    pol len anal y sis
    Mr¹gowo Lake Dis trict
    Masuria
    NE Po land
    Opis:
    Pol len anal y sis of sed i ments from the up per part of bot tom de pos its from Lake Salêt al lowed re con struc tion of main stages of the Late Ho lo cene veg e ta tion trans for ma tion in the Mr¹gowo Lake Dis trict (from ca. 3600 cal. years BC) and to cor re late some of these changes with im mi gra tion and eco nomic ac tiv ity of lo cal hu man groups. Sig nif i cant spread - ing of sec ond ary semi-nat u ral birch for est, de vel op ment of horn beam for est and in creas ing im por tance of anthropogenic open com mu ni ties were the most char ac ter is tic fea tures of veg e ta tion evo lu tion. A def i nite break down of elm took place be tween 2900 and 2500 cal. years BC, slightly af ter in creased con tri bu tion of birch in wood lands. Dis appear ance of ha zel around 1200 cal. years BC, ac com pa nied by ex pan sion of horn beam has been ob served and should be linked with ac tiv ity of the Z¹bie-Szestno type cul ture and the Lusatian cul ture tribes dur ing the Bronze Age, but not with a cli mate change. Con sid er able in ten si fi ca tion of set tle ment pro cesses re corded in the youn ger part of the Subatlantic chronozone was one of the im por tant rea sons that were re spon si ble for quick changes in for est struc ture. Strong and con tin ued de for es ta tion started as early as the end of the 10th cen tury AD and was sub stan tially in ten si fied in the first half of the 13th cen tury.
    Źródło:
    Studia Quaternaria; 2014, 31; 51-60
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of passive seismic to shallow geological structures in urban areas
    Autorzy:
    Mendecki, Maciej Jan
    Glazer, Michał
    Mycka, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2027258.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pas sive seis mic
    Re frac tion Microtremor (ReMi)
    seis mic noise
    Mul ti chan nel Anal y sis of Sur face Waves
    (MASW)
    Re sis tiv ity Im ag ing (RI)
    ur ban area
    Opis:
    To study the shal low geo log i cal struc ture the Re frac tion Microtremor (ReMi) method was ap plied. This tech nique uses seis mic noise anal y sis where a source of this small vi bra tions is the hu man ac tiv ity e.g.: traf fic, pro duc tion, fac tories. The sur veys were car ried out in se lected ur ban ar eas in the re gion of the Up per Silesian In dus trial Dis trict: Sosnowiec–Pogoñ , Chorzów–Chorzów Stary and Bytom–Karb. Each area is char ac ter ized by the pres ence of nearby roads with a very high traf fic. The re sults of pas sive seis mic (ReMi) were con fronted with data ob tained us ing Mul ti - chan nel Anal y sis of Sur face Waves (MASW) and re sis tiv ity im ag ing (RI). Seis mic sur veys were per formed by ap pa - ra tus PASI with 24 chan nels us ing geo phones of 4.5Hz. The re sults showed that pas sive seis mic can be sat is fac to rily used in such ur ban con di tions. The shal low geo log i cal struc ture in ter preted by seis mic meth ods have been well-cor re - lated with re sis tiv ity stud ies.
    Źródło:
    Studia Quaternaria; 2014, 31; 115-122
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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