Biogeography and ecology of the landsnail faunas of North East, South West and West Islands, Three Kings Group, Northern New Zealand

1999 ◽  
Vol 29 (1) ◽  
pp. 1-21 ◽  
Author(s):  
F. J. Brook
Keyword(s):  
New Zealand ◽  
North East ◽  
South West

Axes of Active Warping in the New Zealand Seismic Region

1950 ◽  
Vol 87 (5) ◽  
pp. 360-368 ◽  
Author(s):  
C. A. Cotton
Keyword(s):  
New Zealand ◽  
Seismic Region ◽  
North East ◽  
The North ◽  
South West ◽  
Recorded Data

AbstractGeomorphic evidence is described of very recent upwarping of the shore of Hawke Bay north of Napier, and, as this is of local extent, the suggestion is made that here and in adjoining coastal districts folding is, or recently has been, in progress, with this and another upheaved rib farther to the north-east as anticlinal axes. The coastally drowned areas of Poverty Bay and the north-east and south-west corners of Hawke Bay have escaped the upheaval, and it is suggested that they occupy negative, or synclinal, axes of a fold pattern.Recorded data are insufficient to show to what extent, if at all, the axes of transverse upheaval recognized in the coastal districts extend westward across the main geanticline of the island. All or most of the axial ranges in this belt have recently been rising, however, for this is indicated by the presence of terraces in the valleys of outflowing rivers and by the fact that the vertical intervals between terraces increase upstream.

Factors affecting striped marlin catch rate in the New Zealand recreational fishery

2003 ◽  
Vol 54 (4) ◽  
pp. 473 ◽  
Author(s):  
John Holdsworth ◽  
Peter Saul ◽  
Gene Browne
Keyword(s):  
New Zealand ◽  
Southern Oscillation ◽  
Stepwise Multiple Regression ◽  
Poor Correlation ◽  
Catch Per Unit Effort ◽  
Related Factors ◽  
West Pacific ◽  
Fishing Season ◽  
North East ◽  
South West

A 25-year time series of striped marlin catch per unit effort (CPUE) data has been collected from gamefish charter skippers fishing the north-east coast of New Zealand. The CPUE averaged over the whole gamefishing season ranged from 0.053 striped marlin per charter boat day in 1984–1985 to 0.269 striped marlin per charter boat day in 1998–1999. This study investigates the amount of the variability in gamefish charter CPUE that can be explained by environmental and fishing-related factors for the period 1981–1997. Factors investigated were sea surface temperature during the fishing season, El Niño southern oscillation index, the position of the 20°C isotherm at the beginning of the fishing season, annual commercial catch of striped marlin in the New Zealand 200 mile zone and surface longline CPUE in the wider south-west Pacific. A stepwise multiple regression was used to develop a model of recreational striped marlin CPUE to determine the factors that best accounted for the variation observed. Surface longline CPUE in the general south-west Pacific (10°S–40°S latitude, 165°E–160°W longitude) had the strongest correlation with recreational CPUE (P = 0.001), but a poor correlation was found with longline CPUE from the western Tasman Sea and Coral Sea (10°S–40°S latitude, 145°E–165°E longitude). The total surface longline catch of striped marlin in New Zealand each season was negatively correlated with recreational CPUE (P = 0.019), which indicates a possible interaction between these fisheries.

Detection of tremors in the Marlborough region and its relationship with the 2016 Mw 7.9 Kaikoura (New Zealand) earthquake

2021 ◽  
Author(s):  
Pierre Romanet ◽  
Florent Aden-Antoniow ◽  
Ryosuke Ando ◽  
Stephen Bannister ◽  
Calum Chamberlain ◽  
...  
Keyword(s):  
New Zealand ◽  
Current Knowledge ◽  
Strike Slip ◽  
Tectonic Activity ◽  
North East ◽  
South West ◽  
Using Data ◽  
Kaikoura Earthquake ◽  
Dextral Strike Slip ◽  
Over Time

<p>Seismic tremor has previously been reported in the Marlborough (New Zealand) region, with detections made using the national GeoNet network. However, because of the sparsity of that network, only 40 tremors were detected using 6 stations. We conducted a similar analysis again, but this time using data from 4 stations from the GeoNet network as well as 16 stations from a local campaign network, bringing the total number of stations to 20. Our new tremor catalog contains 4699 tremors (around 100 times more events than the previous catalog) and spans the period 2013-2019 which include the major 2016 Mw7.9 Kaikoura earthquake. Based on our current knowledge, that makes the Marlborough region the most active region for tremors in New Zealand.</p><p> </p><p>The observed tremor in the region are split into two clusters, separated by a gap of around 20 km. The South-West cluster has an elongated shape in the direction of the upper-plate dextral strike-slip (Hope and Clarence) faults. The occurrence of tremor before the Mw 7.9 Kaikoura earthquake is fairly constant over time. After the earthquake however we observe  a strong acceleration in the rate of tremor, that slowly recovers over time. At the end of the analysis (May 2019), more than 2 years after Kaikoura earthquake, the tremor burst rate has still not recovered to the previous rate before the earthquake. We also observe several episodes of tremor migration, with a migration velocity of around ~50km/day, most of the migration being from South-West to North-East.</p><p> </p><p>This new tremor catalog provides a unique opportunity to better understand possible interaction of a major earthquake with the tremor activity and will help to better understand the local tectonic activity of the Marlborough region.</p><p> </p>

The Metamorphosed Limestones and Associated Contaminated Igneous Rocks of the Carlingford District, Co. Louth

1932 ◽  
Vol 69 (5) ◽  
pp. 209-233 ◽  
Author(s):  
G. D. Osborne
Keyword(s):  
Igneous Rocks ◽  
The South ◽  
Ordnance Survey ◽  
Igneous Complex ◽  
North East ◽  
The North ◽  
South West ◽  
Carboniferous Limestone ◽  
Contamination Effects

THE Carlingford-Barnave district falls within the boundaries of Sheet 71 of the Ordnance Survey of Ireland, and forms part of a broad promontory lying between Carlingford Lough on the north-east and Dundalk Bay on the south-west. The greater part of this promontory is made up of an igneous complex of Tertiary age which has invaded the Silurian slates and quartzites and the Carboniferous Limestone Series. This complex has not yet been investigated in detail, but for the purposes of the present paper certain references to it are necessary, and these are made below. The prevalence of hybrid-relations and contamination-effects between the basic and acid igneous rocks of the region is a very marked feature, and because of this it has been difficult at times to decide which types have been responsible for the various stages of the metamorphism.

Peronospora destructor. [Descriptions of Fungi and Bacteria].

1975 ◽  
Author(s):  
K. G. Mukerji
Keyword(s):  
South Africa ◽  
New Zealand ◽  
East Asia ◽  
Downy Mildew ◽  
Geographical Distribution ◽  
Wild Species ◽  
Peronospora Destructor ◽  
North East

Abstract A description is provided for Peronospora destructor. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Affects species of Allium; common on A. cepa, rarer on A. ascalonicum, A. fistulosum, A. porrum, A. sativum, A. schoenoprasum, and a few wild species. DISEASE: Downy mildew (mildiou, falscher Mehitau) of onion. GEOGRAPHICAL DISTRIBUTION: On onion in all parts of Europe and America; north, east and south Africa, west, south and east Asia, Australia, New Zealand; and Tasmania. On other Allium crops in a few countries in Europe and on other continents (CMI Map 76. ed. 3, 1969).

II.—Note on the Recent Volcanic Eruption in New Zealand

1886 ◽  
Vol 3 (9) ◽  
pp. 398-402
Keyword(s):  
New Zealand ◽  
Early Morning ◽  
Considerable Change ◽  
Lake District ◽  
Historic Period ◽  
North East ◽  
The North ◽  
The One ◽  
Wide Zone ◽  
White Island

The “Lake District” of the North Island is too well known to all students of volcanic phenomena, especially of that branch comprising hydrothermal action, to need a detailed description. It will be sufficient to say that it forms a belt, crossing the island from north-east to south-west, and forms a portion of the Middle and Upper Waikato Basins of Hochstetter. The district has been recently brought into prominent notice by the disastrous eruption of Mount Tarawera, very full accounts of which have appeared in New Zealand papers lately received. The eruption commenced in the early morning of Thursday, June 10th, but premonitory symptoms showed themselves a few days before in a tidal wave, three feet high, on Lake Tarawera, great uneasiness of the springs at Ohinemutu, and the reported appearance of smoke issuing from Euapehu, the highest of the great trachytic cones at the extreme south-westerly end of the system. The belt of activity extends from Mount Tongariro at the one end to White Island, in the Bay of Plenty, at the other, a distance of about 150 miles. White Island has undergone considerable change from volcanic action during recent years, and Tongariro was last in eruption in July, 1871; whilst its snowclad sister cone Euapehu has never manifested volcanic action within the historic period until now. This wide zone in the centre of the North Island has, ever since the arrival of the Maoris, been the scene of such extraordinary phenomena, that it has of late been the resort of visitors from all quarters of the globe.

2. Communication relative to the Fresh-Water Limestone of Burdiehouse, near Edinburgh, belonging to the Carboniferous Group of Rocks

1845 ◽  
Vol 1 ◽  
pp. 33-35 ◽  
Author(s):  
Hibbert
Keyword(s):  
Fresh Water ◽  
Marine Origin ◽  
North East ◽  
South West ◽  
Water Origin ◽  
The Common ◽  
Firth Of Forth ◽  
Carboniferous Limestone

In his paper, the author explains that the limestone in question, which is confounded with the common carboniferous or mountain limestone of marine origin, is, in his opinion, of fresh-water origin.On an irregular line extending from Joppa on the coast of the Firth of Forth, in a south and south-west direction to the Pentland Hills, strata of mountain or carboniferous limestone crop out at intervals; and their marine origin is indicated by encrinites, the Productus, &c., and corallines. This limestone is developed with least interruption between Edmonstone and Muirhouse, where it is from twelve to twenty feet thick. At this part of the line may be seen fractures and elevations of the strata of limestone and superincumbent shale and sandstone, evidently occasioned by a sudden and violent uplifting force acting from north-east to south-west, and causing the uplifted strata to dip south-east at an angle of 25°. These uplifted beds, between Edmonstone and Muirhouse, and subsequently to Burdiehouse, form the strata which dip under the coalmeasures of Gilmerton, Loanhead, and other sites.

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